[SPARK-17575][DOCS] Remove extra table tags in configuration document
[SPARK-17575][DOCS] Remove extra table tags in configuration document

## What changes were proposed in this pull request?

Remove extra table tags in configurations document.

## How was this patch tested?

Run all test cases and generate document.

Before with extra tag its look like below
![config-wrong1](https://cloud.githubusercontent.com/assets/8075390/18608239/c602bb60-7d01-11e6-875e-f38558997dd3.png)

![config-wrong2](https://cloud.githubusercontent.com/assets/8075390/18608241/cf3b672c-7d01-11e6-935e-1e73f9e6e578.png)

After removing tags its looks like below

![config](https://cloud.githubusercontent.com/assets/8075390/18608245/e156eb8e-7d01-11e6-98aa-3be68d4d1961.png)

![config2](https://cloud.githubusercontent.com/assets/8075390/18608247/e84eecd4-7d01-11e6-9738-a3f7ff8fe834.png)

Author: sandy <phalodi@gmail.com>

Closes #15130 from phalodi/SPARK-17575.

ioana-delaney/spark,saturday-shi/spark,HyukjinKwon/spark,shuangshuangwang/spark,ConeyLiu/spark,nlalevee/spark,guoxiaolongzte/spark,skonto/spark,hvanhovell/spark,darionyaphet/spark,shuangshuangwang/spark,panfengfeng/spark,Panos-Bletsos/spark-cost-model-optimizer,cloud-fan/spark,cin/spark,xuanyuanking/spark,dbtsai/spark,map222/spark,holdenk/spark,JoshRosen/spark,darionyaphet/spark,Panos-Bletsos/spark-cost-model-optimizer,mzl9039/spark,Panos-Bletsos/spark-cost-model-optimizer,joseph-torres/spark,big-pegasus/spark,goldmedal/spark,zero323/spark,narahari92/spark,wangyum/spark,ibm-research-ireland/sparkoscope,hvanhovell/spark,ron8hu/spark,Panos-Bletsos/spark-cost-model-optimizer,aray/spark,ddna1021/spark,actuaryzhang/spark,aosagie/spark,zuotingbing/spark,jiangxb1987/spark,darionyaphet/spark,huang1900/spark,alunarbeach/spark,ptkool/spark,zuotingbing/spark,poffuomo/spark,zzcclp/spark,sachintyagi22/spark,joseph-torres/spark,jlopezmalla/spark,ahnqirage/spark,joseph-torres/spark,adrian-ionescu/apache-spark,rezasafi/spark,vinodkc/spark,sahilTakiar/spark,bOOm-X/spark,SHASHANKB/spark,sahilTakiar/spark,eyalfa/spark,wangmiao1981/spark,JoshRosen/spark,vinodkc/spark,szhem/spark,debugger87/spark,JerryLead/spark,jianran/spark,patrick-nicholson/spark,dbtsai/spark,nchammas/spark,chuckchen/spark,rekhajoshm/spark,mahak/spark,zero323/spark,ueshin/apache-spark,cloud-fan/spark,nlalevee/spark,rikima/spark,lxsmnv/spark,szhem/spark,metamx/spark,sahilTakiar/spark,Aegeaner/spark,cin/spark,MLnick/spark,Aegeaner/spark,ron8hu/spark,jianran/spark,Panos-Bletsos/spark-cost-model-optimizer,goldmedal/spark,michalsenkyr/spark,jlopezmalla/spark,xflin/spark,poffuomo/spark,apache/spark,ron8hu/spark,eyalfa/spark,narahari92/spark,facaiy/spark,apache-spark-on-k8s/spark,witgo/spark,bravo-zhang/spark,sahilTakiar/spark,aray/spark,szhem/spark,ioana-delaney/spark,shuangshuangwang/spark,debugger87/spark,xflin/spark,akopich/spark,SnappyDataInc/spark,dbtsai/spark,nlalevee/spark,lxsmnv/spark,zuotingbing/spark,hhbyyh/spark,UndeadBaneGitHub/spark,ibm-research-ireland/sparkoscope,WeichenXu123/spark,sureshthalamati/spark,nilsgrabbert/spark,Aegeaner/spark,stanzhai/spark,facaiy/spark,liyichao/spark,sahilTakiar/spark,patrick-nicholson/spark,kiszk/spark,andrewor14/spark,sachintyagi22/spark,dhruve/spark,jiangxb1987/spark,SHASHANKB/spark,dhruve/spark,andrewor14/spark,guoxiaolongzte/spark,HyukjinKwon/spark,kimoonkim/spark,jkbradley/spark,adrian-ionescu/apache-spark,metamx/spark,rezasafi/spark,JoshRosen/spark,bravo-zhang/spark,zhouyejoe/spark,xuanyuanking/spark,1haodian/spark,spark-test/spark,ajaysaini725/spark,xuanyuanking/spark,wangyum/spark,ibm-research-ireland/sparkoscope,cin/spark,ron8hu/spark,adrian-ionescu/apache-spark,srowen/spark,jianran/spark,nilsgrabbert/spark,kiszk/spark,nlalevee/spark,adrian-ionescu/apache-spark,matthewfranglen/spark,sachintyagi22/spark,liutang123/spark,ConeyLiu/spark,jkbradley/spark,JerryLead/spark,bOOm-X/spark,ptkool/spark,srowen/spark,saturday-shi/spark,ericvandenbergfb/spark,Panos-Bletsos/spark-cost-model-optimizer,wangmiao1981/spark,apache-spark-on-k8s/spark,zuotingbing/spark,actuaryzhang/spark,zzcclp/spark,bdrillard/spark,alunarbeach/spark,poffuomo/spark,wzhfy/spark,sachintyagi22/spark,ioana-delaney/spark,rikima/spark,setjet/spark,eyalfa/spark,alunarbeach/spark,kissmetrics/spark,zero323/spark,ConeyLiu/spark,bOOm-X/spark,adrian-ionescu/apache-spark,aokolnychyi/spark,maropu/spark,cloud-fan/spark,vinodkc/spark,1haodian/spark,someorz/spark,wzhfy/spark,huang1900/spark,nchammas/spark,jiangxb1987/spark,tengpeng/spark,ajaysaini725/spark,Panos-Bletsos/spark-cost-model-optimizer,wangmiao1981/spark,WeichenXu123/spark,shuangshuangwang/spark,hvanhovell/spark,vinodkc/spark,debugger87/spark,aosagie/spark,janewangfb/spark,pgandhi999/spark,dhruve/spark,rekhajoshm/spark,liutang123/spark,zhouyejoe/spark,ibm-research-ireland/sparkoscope,LantaoJin/spark,nilsgrabbert/spark,minixalpha/spark,metamx/spark,sureshthalamati/spark,UndeadBaneGitHub/spark,goldmedal/spark,wzhfy/spark,dhruve/spark,liutang123/spark,witgo/spark,darionyaphet/spark,panfengfeng/spark,zero323/spark,ahnqirage/spark,ericvandenbergfb/spark,someorz/spark,highfei2011/spark,taroplus/spark,setjet/spark,kevinyu98/spark,rezasafi/spark,WindCanDie/spark,bdrillard/spark,loneknightpy/spark,ueshin/apache-spark,big-pegasus/spark,UndeadBaneGitHub/spark,chuckchen/spark,caneGuy/spark,apache/spark,setjet/spark,dbtsai/spark,shaneknapp/spark,sachintyagi22/spark,jianran/spark,mike0sv/spark,nilsgrabbert/spark,apache/spark,ConeyLiu/spark,ioana-delaney/spark,rezasafi/spark,alunarbeach/spark,tejasapatil/spark,WindCanDie/spark,huang1900/spark,mike0sv/spark,SHASHANKB/spark,poffuomo/spark,liyichao/spark,akopich/spark,rednaxelafx/apache-spark,taroplus/spark,patrick-nicholson/spark,kevinyu98/spark,kimoonkim/spark,ptkool/spark,techaddict/spark,map222/spark,liyichao/spark,someorz/spark,sureshthalamati/spark,icexelloss/spark,loneknightpy/spark,publicRoman/spark,mdespriee/spark,actuaryzhang/spark,aray/spark,eyalfa/spark,setjet/spark,jianran/spark,mzl9039/spark,rednaxelafx/apache-spark,huang1900/spark,chuckchen/spark,WeichenXu123/spark,HyukjinKwon/spark,ConeyLiu/spark,SHASHANKB/spark,aosagie/spark,chuckchen/spark,apache/spark,bravo-zhang/spark,wangmiao1981/spark,saltstar/spark,gengliangwang/spark,icexelloss/spark,LantaoJin/spark,darionyaphet/spark,akopich/spark,brad-kaiser/spark,BryanCutler/spark,facaiy/spark,zzcclp/spark,akopich/spark,michalsenkyr/spark,rekhajoshm/spark,metamx/spark,byakuinss/spark,rikima/spark,liyichao/spark,dongjoon-hyun/spark,michalsenkyr/spark,publicRoman/spark,esi-mineset/spark,kissmetrics/spark,goldmedal/spark,dongjoon-hyun/spark,ericvandenbergfb/spark,esi-mineset/spark,huang1900/spark,markhamstra/spark,mahak/spark,jrshust/spark,srowen/spark,zuotingbing/spark,yanboliang/spark,zero323/spark,ibm-research-ireland/sparkoscope,sureshthalamati/spark,xflin/spark,yanboliang/spark,jkbradley/spark,ahnqirage/spark,janewangfb/spark,mzl9039/spark,UndeadBaneGitHub/spark,SnappyDataInc/spark,jrshust/spark,cloud-fan/spark,loneknightpy/spark,markhamstra/spark,brad-kaiser/spark,publicRoman/spark,big-pegasus/spark,tejasapatil/spark,apache-spark-on-k8s/spark,patrick-nicholson/spark,yanboliang/spark,spark-test/spark,saltstar/spark,milliman/spark,bOOm-X/spark,kimoonkim/spark,ioana-delaney/spark,aokolnychyi/spark,brad-kaiser/spark,witgo/spark,SHASHANKB/spark,someorz/spark,rednaxelafx/apache-spark,tejasapatil/spark,shubhamchopra/spark,witgo/spark,wzhfy/spark,aosagie/spark,bdrillard/spark,kiszk/spark,zzcclp/spark,ptkool/spark,witgo/spark,loneknightpy/spark,caneGuy/spark,aosagie/spark,jlopezmalla/spark,mahak/spark,rezasafi/spark,aosagie/spark,markhamstra/spark,kissmetrics/spark,liutang123/spark,janewangfb/spark,liutang123/spark,bOOm-X/spark,mdespriee/spark,ioana-delaney/spark,bdrillard/spark,holdenk/spark,lxsmnv/spark,dongjoon-hyun/spark,hhbyyh/spark,ibm-research-ireland/sparkoscope,jlopezmalla/spark,guoxiaolongzte/spark,kissmetrics/spark,minixalpha/spark,rekhajoshm/spark,jrshust/spark,zzcclp/spark,eyalfa/spark,shaneknapp/spark,icexelloss/spark,ron8hu/spark,loneknightpy/spark,zuotingbing/spark,alunarbeach/spark,SnappyDataInc/spark,ajaysaini725/spark,pgandhi999/spark,liutang123/spark,wzhfy/spark,nlalevee/spark,ptkool/spark,jiangxb1987/spark,vinodkc/spark,bOOm-X/spark,ajaysaini725/spark,metamx/spark,dbtsai/spark,spark-test/spark,maropu/spark,saturday-shi/spark,srowen/spark,kimoonkim/spark,sahilTakiar/spark,jiangxb1987/spark,brad-kaiser/spark,milliman/spark,aray/spark,shuangshuangwang/spark,patrick-nicholson/spark,shuangshuangwang/spark,apache-spark-on-k8s/spark,wangyum/spark,stanzhai/spark,pgandhi999/spark,wangyum/spark,tengpeng/spark,cloud-fan/spark,ConeyLiu/spark,techaddict/spark,cin/spark,JoshRosen/spark,mike0sv/spark,techaddict/spark,JerryLead/spark,eyalfa/spark,akopich/spark,mdespriee/spark,poffuomo/spark,zhouyejoe/spark,szhem/spark,zhouyejoe/spark,caneGuy/spark,saltstar/spark,liyichao/spark,Aegeaner/spark,mzl9039/spark,kimoonkim/spark,janewangfb/spark,byakuinss/spark,taroplus/spark,ptkool/spark,ajaysaini725/spark,ddna1021/spark,ajaysaini725/spark,joseph-torres/spark,aray/spark,LantaoJin/spark,nlalevee/spark,cloud-fan/spark,markhamstra/spark,xuanyuanking/spark,tengpeng/spark,andrewor14/spark,szhem/spark,vinodkc/spark,dongjoon-hyun/spark,janewangfb/spark,pgandhi999/spark,skonto/spark,highfei2011/spark,kissmetrics/spark,WindCanDie/spark,ajaysaini725/spark,goldmedal/spark,witgo/spark,jrshust/spark,zzcclp/spark,rednaxelafx/apache-spark,akopich/spark,szhem/spark,HyukjinKwon/spark,nilsgrabbert/spark,shubhamchopra/spark,Aegeaner/spark,map222/spark,ueshin/apache-spark,maropu/spark,milliman/spark,ericvandenbergfb/spark,MLnick/spark,facaiy/spark,gengliangwang/spark,byakuinss/spark,joseph-torres/spark,pgandhi999/spark,zhouyejoe/spark,gengliangwang/spark,minixalpha/spark,alunarbeach/spark,UndeadBaneGitHub/spark,WeichenXu123/spark,xuanyuanking/spark,spark-test/spark,skonto/spark,ddna1021/spark,jkbradley/spark,JerryLead/spark,bOOm-X/spark,HyukjinKwon/spark,ioana-delaney/spark,nlalevee/spark,mahak/spark,hvanhovell/spark,spark-test/spark,sureshthalamati/spark,huang1900/spark,kimoonkim/spark,caneGuy/spark,rikima/spark,panfengfeng/spark,debugger87/spark,ron8hu/spark,nilsgrabbert/spark,wangmiao1981/spark,michalsenkyr/spark,srowen/spark,holdenk/spark,andrewor14/spark,Aegeaner/spark,kevinyu98/spark,akopich/spark,cin/spark,BryanCutler/spark,hhbyyh/spark,pgandhi999/spark,esi-mineset/spark,SnappyDataInc/spark,hhbyyh/spark,maropu/spark,maropu/spark,minixalpha/spark,shubhamchopra/spark,maropu/spark,markhamstra/spark,jlopezmalla/spark,kiszk/spark,kissmetrics/spark,kimoonkim/spark,loneknightpy/spark,tengpeng/spark,MLnick/spark,esi-mineset/spark,MLnick/spark,bravo-zhang/spark,apache/spark,pgandhi999/spark,sureshthalamati/spark,chuckchen/spark,eyalfa/spark,srowen/spark,jlopezmalla/spark,apache/spark,hvanhovell/spark,panfengfeng/spark,milliman/spark,big-pegasus/spark,facaiy/spark,bdrillard/spark,guoxiaolongzte/spark,shaneknapp/spark,wangmiao1981/spark,lvdongr/spark,xflin/spark,someorz/spark,big-pegasus/spark,mike0sv/spark,liyichao/spark,aray/spark,HyukjinKwon/spark,ahnqirage/spark,narahari92/spark,mdespriee/spark,dhruve/spark,lxsmnv/spark,stanzhai/spark,BryanCutler/spark,zuotingbing/spark,lvdongr/spark,someorz/spark,WeichenXu123/spark,rekhajoshm/spark,narahari92/spark,taroplus/spark,adrian-ionescu/apache-spark,JoshRosen/spark,setjet/spark,cin/spark,caneGuy/spark,JoshRosen/spark,tengpeng/spark,sahilTakiar/spark,tejasapatil/spark,rikima/spark,ibm-research-ireland/sparkoscope,andrewor14/spark,wangyum/spark,ueshin/apache-spark,hhbyyh/spark,ericvandenbergfb/spark,janewangfb/spark,1haodian/spark,taroplus/spark,apache-spark-on-k8s/spark,actuaryzhang/spark,highfei2011/spark,actuaryzhang/spark,debugger87/spark,highfei2011/spark,mdespriee/spark,goldmedal/spark,rednaxelafx/apache-spark,SHASHANKB/spark,lvdongr/spark,BryanCutler/spark,shuangshuangwang/spark,wangmiao1981/spark,dhruve/spark,jlopezmalla/spark,poffuomo/spark,narahari92/spark,LantaoJin/spark,yanboliang/spark,yanboliang/spark,zhouyejoe/spark,wangyum/spark,techaddict/spark,esi-mineset/spark,bdrillard/spark,nchammas/spark,jkbradley/spark,SnappyDataInc/spark,kevinyu98/spark,SHASHANKB/spark,patrick-nicholson/spark,sachintyagi22/spark,stanzhai/spark,cin/spark,andrewor14/spark,aokolnychyi/spark,kissmetrics/spark,markhamstra/spark,holdenk/spark,tejasapatil/spark,sachintyagi22/spark,liyichao/spark,xflin/spark,panfengfeng/spark,map222/spark,someorz/spark,UndeadBaneGitHub/spark,rezasafi/spark,wzhfy/spark,alunarbeach/spark,ahnqirage/spark,jrshust/spark,techaddict/spark,yanboliang/spark,jrshust/spark,aosagie/spark,ddna1021/spark,panfengfeng/spark,rezasafi/spark,lxsmnv/spark,dongjoon-hyun/spark,facaiy/spark,icexelloss/spark,hvanhovell/spark,aokolnychyi/spark,chuckchen/spark,icexelloss/spark,WindCanDie/spark,saturday-shi/spark,lxsmnv/spark,mdespriee/spark,mike0sv/spark,goldmedal/spark,big-pegasus/spark,aokolnychyi/spark,dbtsai/spark,witgo/spark,techaddict/spark,panfengfeng/spark,guoxiaolongzte/spark,lvdongr/spark,minixalpha/spark,gengliangwang/spark,narahari92/spark,michalsenkyr/spark,bdrillard/spark,ericvandenbergfb/spark,holdenk/spark,LantaoJin/spark,bravo-zhang/spark,adrian-ionescu/apache-spark,actuaryzhang/spark,huang1900/spark,ahnqirage/spark,debugger87/spark,LantaoJin/spark,rednaxelafx/apache-spark,rekhajoshm/spark,ueshin/apache-spark,saltstar/spark,hvanhovell/spark,vinodkc/spark,joseph-torres/spark,map222/spark,stanzhai/spark,gengliangwang/spark,patrick-nicholson/spark,markhamstra/spark,ueshin/apache-spark,spark-test/spark,mike0sv/spark,xflin/spark,zzcclp/spark,SnappyDataInc/spark,skonto/spark,xuanyuanking/spark,publicRoman/spark,aokolnychyi/spark,mzl9039/spark,WeichenXu123/spark,zero323/spark,saturday-shi/spark,shubhamchopra/spark,michalsenkyr/spark,brad-kaiser/spark,facaiy/spark,ron8hu/spark,wangyum/spark,stanzhai/spark,ddna1021/spark,darionyaphet/spark,tengpeng/spark,mahak/spark,UndeadBaneGitHub/spark,szhem/spark,ptkool/spark,holdenk/spark,hhbyyh/spark,guoxiaolongzte/spark,ConeyLiu/spark,cloud-fan/spark,byakuinss/spark,rekhajoshm/spark,holdenk/spark,kiszk/spark,SnappyDataInc/spark,maropu/spark,nchammas/spark,shubhamchopra/spark,highfei2011/spark,janewangfb/spark,nchammas/spark,JerryLead/spark,BryanCutler/spark,kevinyu98/spark,setjet/spark,dbtsai/spark,ddna1021/spark,tejasapatil/spark,minixalpha/spark,publicRoman/spark,brad-kaiser/spark,map222/spark,icexelloss/spark,chuckchen/spark,big-pegasus/spark,kevinyu98/spark,metamx/spark,brad-kaiser/spark,kiszk/spark,publicRoman/spark,LantaoJin/spark,mzl9039/spark,jiangxb1987/spark,jrshust/spark,srowen/spark,dongjoon-hyun/spark,stanzhai/spark,mdespriee/spark,WeichenXu123/spark,WindCanDie/spark,dongjoon-hyun/spark,byakuinss/spark,tejasapatil/spark,andrewor14/spark,lxsmnv/spark,debugger87/spark,caneGuy/spark,WindCanDie/spark,saltstar/spark,darionyaphet/spark,shubhamchopra/spark,esi-mineset/spark,MLnick/spark,map222/spark,spark-test/spark,mike0sv/spark,wzhfy/spark,metamx/spark,lvdongr/spark,jkbradley/spark,ericvandenbergfb/spark,saltstar/spark,shaneknapp/spark,rikima/spark,michalsenkyr/spark,highfei2011/spark,byakuinss/spark,ddna1021/spark,apache-spark-on-k8s/spark,1haodian/spark,gengliangwang/spark,milliman/spark,MLnick/spark,nilsgrabbert/spark,techaddict/spark,kiszk/spark,HyukjinKwon/spark,caneGuy/spark,rednaxelafx/apache-spark,saturday-shi/spark,apache-spark-on-k8s/spark,nchammas/spark,ahnqirage/spark,BryanCutler/spark,apache/spark,byakuinss/spark,aray/spark,1haodian/spark,bravo-zhang/spark,mzl9039/spark,zhouyejoe/spark,minixalpha/spark,joseph-torres/spark,esi-mineset/spark,shaneknapp/spark,liutang123/spark,taroplus/spark,skonto/spark,JerryLead/spark,rikima/spark,ueshin/apache-spark,yanboliang/spark,lvdongr/spark,shubhamchopra/spark,mahak/spark,poffuomo/spark,kevinyu98/spark,loneknightpy/spark,lvdongr/spark,Aegeaner/spark,BryanCutler/spark,shaneknapp/spark,sureshthalamati/spark,xuanyuanking/spark,taroplus/spark,publicRoman/spark,jianran/spark,icexelloss/spark,jiangxb1987/spark,tengpeng/spark,zero323/spark,saltstar/spark,guoxiaolongzte/spark,dhruve/spark,narahari92/spark,MLnick/spark,bravo-zhang/spark,milliman/spark,JoshRosen/spark,setjet/spark,shaneknapp/spark,nchammas/spark,1haodian/spark,JerryLead/spark,mahak/spark,xflin/spark,skonto/spark,jkbradley/spark,skonto/spark,gengliangwang/spark,actuaryzhang/spark,1haodian/spark,milliman/spark,hhbyyh/spark,saturday-shi/spark,aokolnychyi/spark,WindCanDie/spark,jianran/spark,highfei2011/spark