[MINOR] Remove unnecessary spaces in `include_example.rb`
[MINOR] Remove unnecessary spaces in `include_example.rb`

Author: Yu ISHIKAWA <yuu.ishikawa@gmail.com>

Closes #9960 from yu-iskw/minor-remove-spaces.

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