Minor formatting in doc/build.md
Minor formatting in doc/build.md

szha/mxnet,jennyzhang0215/incubator-mxnet,madjam/mxnet,szha/mxnet,thirdwing/mxnet,xcgoner/dist-mxnet,precedenceguo/mxnet,wangyum/mxnet,Guneet-Dhillon/mxnet,zhreshold/mxnet,antoan2/incubator-mxnet,jermainewang/mxnet,mbaijal/incubator-mxnet,jennyzhang0215/incubator-mxnet,danithaca/mxnet,zhreshold/mxnet,ptrendx/mxnet,hotpxl/mxnet,EvanzzzZ/mxnet,reminisce/mxnet,ykim362/mxnet,yuruofeifei/mxnet,navrasio/mxnet,solin319/incubator-mxnet,yajiedesign/mxnet,mbaijal/incubator-mxnet,wangyum/mxnet,gautamkmr/incubator-mxnet,smolix/incubator-mxnet,yajiedesign/mxnet,mbaijal/incubator-mxnet,saurabh3949/mxnet,Mega-DatA-Lab/mxnet,xcgoner/dist-mxnet,antoan2/incubator-mxnet,gautamkmr/incubator-mxnet,navrasio/mxnet,piiswrong/mxnet,smolix/incubator-mxnet,jennyzhang0215/incubator-mxnet,kevinthesun/mxnet,hesseltuinhof/mxnet,ForkedReposBak/mxnet,mbaijal/incubator-mxnet,DR08/mxnet,ZihengJiang/mxnet,navrasio/mxnet,Ldpe2G/mxnet,crazy-cat/incubator-mxnet,sergeykolychev/mxnet,nicklhy/mxnet,jiajiechen/mxnet,TuSimple/mxnet,nicklhy/mxnet,pluskid/mxnet,coder-james/mxnet,Mega-DatA-Lab/mxnet,hpi-xnor/BMXNet,ykim362/mxnet,ptrendx/mxnet,sergeykolychev/mxnet,jamesliu/mxnet,apaleyes/mxnet,arank/mxnet,precedenceguo/mxnet,tornadomeet/mxnet,Prasad9/incubator-mxnet,pluskid/mxnet,jennyzhang0215/incubator-mxnet,eric-haibin-lin/mxnet,ShownX/incubator-mxnet,piiswrong/mxnet,leezu/mxnet,LinkHS/incubator-mxnet,coder-james/mxnet,ShownX/incubator-mxnet,jiajiechen/mxnet,kevinthesun/mxnet,dmlc/mxnet,gautamkmr/incubator-mxnet,luoyetx/mxnet,danithaca/mxnet,reminisce/mxnet,jermainewang/mxnet,TuSimple/mxnet,solin319/incubator-mxnet,rahul003/mxnet,kkk669/mxnet,solin319/incubator-mxnet,sergeykolychev/mxnet,lxn2/mxnet,kkk669/mxnet,DickJC123/mxnet,jennyzhang0215/incubator-mxnet,piiswrong/mxnet,hotpxl/mxnet,smolix/incubator-mxnet,LinkHS/incubator-mxnet,kkk669/mxnet,piiswrong/mxnet,jamesliu/mxnet,danithaca/mxnet,Mega-DatA-Lab/mxnet,rishita/mxnet,crazy-cat/incubator-mxnet,zhreshold/mxnet,leezu/mxnet,likelyzhao/mxnet,ZihengJiang/mxnet,crazy-cat/incubator-mxnet,ykim362/mxnet,jennyzhang0215/incubator-mxnet,eric-haibin-lin/mxnet,arank/mxnet,hpi-xnor/BMXNet,precedenceguo/mxnet,Northrend/mxnet,leezu/mxnet,madjam/mxnet,zhreshold/mxnet,nicklhy/mxnet,yuruofeifei/mxnet,smolix/incubator-mxnet,jermainewang/mxnet,vikingMei/mxnet,Guneet-Dhillon/mxnet,ptrendx/mxnet,piiswrong/mxnet,Mega-DatA-Lab/mxnet,weleen/mxnet,szha/mxnet,jamesliu/mxnet,arikpoz/mxnet,indhub/mxnet,kevinthesun/mxnet,yajiedesign/mxnet,jamesliu/mxnet,TuSimple/mxnet,saurabh3949/mxnet,precedenceguo/mxnet,fullfanta/mxnet,vikingMei/mxnet,ShownX/incubator-mxnet,fullfanta/mxnet,eric-haibin-lin/mxnet,nicklhy/mxnet,saurabh3949/mxnet,ZihengJiang/mxnet,formath/mxnet,lxn2/mxnet,indhub/mxnet,saurabh3949/mxnet,apache/incubator-mxnet,ShownX/incubator-mxnet,sergeykolychev/mxnet,kkk669/mxnet,ForkedReposBak/mxnet,apaleyes/mxnet,fullfanta/mxnet,coder-james/mxnet,luoyetx/mxnet,tlby/mxnet,Northrend/mxnet,tlby/mxnet,arank/mxnet,tlby/mxnet,LinkHS/incubator-mxnet,hotpxl/mxnet,jermainewang/mxnet,sxjscience/mxnet,leezu/mxnet,dmlc/mxnet,rahul003/mxnet,smolix/incubator-mxnet,apaleyes/mxnet,EvanzzzZ/mxnet,gautamkmr/incubator-mxnet,danithaca/mxnet,coder-james/mxnet,thirdwing/mxnet,Prasad9/incubator-mxnet,danithaca/mxnet,gautamkmr/incubator-mxnet,Guneet-Dhillon/mxnet,thirdwing/mxnet,jennyzhang0215/incubator-mxnet,CodingCat/mxnet,madjam/mxnet,Ldpe2G/mxnet,xcgoner/dist-mxnet,EvanzzzZ/mxnet,zhreshold/mxnet,yajiedesign/mxnet,thirdwing/mxnet,arank/mxnet,larroy/mxnet,Ldpe2G/mxnet,gautamkmr/incubator-mxnet,stefanhenneking/mxnet,kkk669/mxnet,navrasio/mxnet,fullfanta/mxnet,wangyum/mxnet,coder-james/mxnet,pluskid/mxnet,sergeykolychev/mxnet,wangyum/mxnet,yuruofeifei/mxnet,hpi-xnor/BMXNet,EvanzzzZ/mxnet,dmlc/mxnet,nicklhy/mxnet,thirdwing/mxnet,DR08/mxnet,LinkHS/incubator-mxnet,LinkHS/incubator-mxnet,rishita/mxnet,apache/incubator-mxnet,apaleyes/mxnet,apaleyes/mxnet,szha/mxnet,coder-james/mxnet,weleen/mxnet,ZihengJiang/mxnet,rahul003/mxnet,hesseltuinhof/mxnet,solin319/incubator-mxnet,Guneet-Dhillon/mxnet,sxjscience/mxnet,arikpoz/mxnet,hesseltuinhof/mxnet,Prasad9/incubator-mxnet,lxn2/mxnet,apaleyes/mxnet,jamesliu/mxnet,Guneet-Dhillon/mxnet,sxjscience/mxnet,piiswrong/mxnet,formath/mxnet,likelyzhao/mxnet,danithaca/mxnet,indhub/mxnet,larroy/mxnet,formath/mxnet,Mega-DatA-Lab/mxnet,formath/mxnet,stefanhenneking/mxnet,Ldpe2G/mxnet,wangyum/mxnet,ptrendx/mxnet,kkk669/mxnet,ForkedReposBak/mxnet,CodingCat/mxnet,ForkedReposBak/mxnet,ykim362/mxnet,zhreshold/mxnet,likelyzhao/mxnet,rishita/mxnet,hesseltuinhof/mxnet,hpi-xnor/BMXNet,precedenceguo/mxnet,yuruofeifei/mxnet,formath/mxnet,sxjscience/mxnet,luoyetx/mxnet,wangyum/mxnet,smolix/incubator-mxnet,tlby/mxnet,antoan2/incubator-mxnet,Mega-DatA-Lab/mxnet,tornadomeet/mxnet,hotpxl/mxnet,hpi-xnor/BMXNet,rishita/mxnet,EvanzzzZ/mxnet,Ldpe2G/mxnet,xcgoner/dist-mxnet,mbaijal/incubator-mxnet,kevinthesun/mxnet,CodingCat/mxnet,Guneet-Dhillon/mxnet,nicklhy/mxnet,likelyzhao/mxnet,reminisce/mxnet,nicklhy/mxnet,rahul003/mxnet,thirdwing/mxnet,CodingCat/mxnet,arikpoz/mxnet,stefanhenneking/mxnet,eric-haibin-lin/mxnet,DR08/mxnet,reminisce/mxnet,tornadomeet/mxnet,szha/mxnet,Prasad9/incubator-mxnet,apache/incubator-mxnet,Guneet-Dhillon/mxnet,kkk669/mxnet,arank/mxnet,EvanzzzZ/mxnet,Northrend/mxnet,stefanhenneking/mxnet,weleen/mxnet,CodingCat/mxnet,DickJC123/mxnet,kevinthesun/mxnet,szha/mxnet,mbaijal/incubator-mxnet,mbaijal/incubator-mxnet,zhreshold/mxnet,yuruofeifei/mxnet,solin319/incubator-mxnet,formath/mxnet,jermainewang/mxnet,Prasad9/incubator-mxnet,jiajiechen/mxnet,Northrend/mxnet,lxn2/mxnet,hesseltuinhof/mxnet,formath/mxnet,rishita/mxnet,ykim362/mxnet,navrasio/mxnet,piiswrong/mxnet,luoyetx/mxnet,arank/mxnet,weleen/mxnet,yuruofeifei/mxnet,danithaca/mxnet,formath/mxnet,jennyzhang0215/incubator-mxnet,crazy-cat/incubator-mxnet,lxn2/mxnet,smolix/incubator-mxnet,fullfanta/mxnet,nicklhy/mxnet,ptrendx/mxnet,dmlc/mxnet,reminisce/mxnet,jamesliu/mxnet,hesseltuinhof/mxnet,CodingCat/mxnet,ykim362/mxnet,likelyzhao/mxnet,Ldpe2G/mxnet,arikpoz/mxnet,solin319/incubator-mxnet,kevinthesun/mxnet,arank/mxnet,Northrend/mxnet,rishita/mxnet,smolix/incubator-mxnet,yuruofeifei/mxnet,DR08/mxnet,eric-haibin-lin/mxnet,ZihengJiang/mxnet,jamesliu/mxnet,TuSimple/mxnet,rahul003/mxnet,tlby/mxnet,vikingMei/mxnet,Northrend/mxnet,hotpxl/mxnet,rahul003/mxnet,luoyetx/mxnet,apaleyes/mxnet,TuSimple/mxnet,gautamkmr/incubator-mxnet,vikingMei/mxnet,hpi-xnor/BMXNet,likelyzhao/mxnet,TuSimple/mxnet,TuSimple/mxnet,CodingCat/mxnet,stefanhenneking/mxnet,madjam/mxnet,sxjscience/mxnet,wangyum/mxnet,ykim362/mxnet,DickJC123/mxnet,mbaijal/incubator-mxnet,reminisce/mxnet,arikpoz/mxnet,eric-haibin-lin/mxnet,likelyzhao/mxnet,xcgoner/dist-mxnet,DR08/mxnet,precedenceguo/mxnet,jiajiechen/mxnet,indhub/mxnet,larroy/mxnet,arikpoz/mxnet,szha/mxnet,ShownX/incubator-mxnet,ShownX/incubator-mxnet,leezu/mxnet,ZihengJiang/mxnet,vikingMei/mxnet,larroy/mxnet,leezu/mxnet,arank/mxnet,pluskid/mxnet,tornadomeet/mxnet,coder-james/mxnet,ptrendx/mxnet,piiswrong/mxnet,kkk669/mxnet,yuruofeifei/mxnet,ptrendx/mxnet,zhreshold/mxnet,jiajiechen/mxnet,gautamkmr/incubator-mxnet,ptrendx/mxnet,indhub/mxnet,vikingMei/mxnet,mbaijal/incubator-mxnet,hotpxl/mxnet,saurabh3949/mxnet,TuSimple/mxnet,apaleyes/mxnet,tlby/mxnet,antoan2/incubator-mxnet,jiajiechen/mxnet,crazy-cat/incubator-mxnet,jermainewang/mxnet,madjam/mxnet,crazy-cat/incubator-mxnet,pluskid/mxnet,jiajiechen/mxnet,leezu/mxnet,kkk669/mxnet,saurabh3949/mxnet,rahul003/mxnet,wangyum/mxnet,tlby/mxnet,fullfanta/mxnet,saurabh3949/mxnet,rishita/mxnet,thirdwing/mxnet,xcgoner/dist-mxnet,tlby/mxnet,jermainewang/mxnet,lxn2/mxnet,ykim362/mxnet,weleen/mxnet,zhreshold/mxnet,antoan2/incubator-mxnet,weleen/mxnet,Northrend/mxnet,dmlc/mxnet,sergeykolychev/mxnet,tornadomeet/mxnet,DR08/mxnet,lxn2/mxnet,formath/mxnet,solin319/incubator-mxnet,larroy/mxnet,szha/mxnet,Northrend/mxnet,pluskid/mxnet,ptrendx/mxnet,DR08/mxnet,yajiedesign/mxnet,stefanhenneking/mxnet,TuSimple/mxnet,fullfanta/mxnet,sergeykolychev/mxnet,Prasad9/incubator-mxnet,weleen/mxnet,ForkedReposBak/mxnet,hpi-xnor/BMXNet,ZihengJiang/mxnet,Mega-DatA-Lab/mxnet,sergeykolychev/mxnet,Prasad9/incubator-mxnet,nicklhy/mxnet,solin319/incubator-mxnet,pluskid/mxnet,dmlc/mxnet,weleen/mxnet,ptrendx/mxnet,madjam/mxnet,smolix/incubator-mxnet,Ldpe2G/mxnet,LinkHS/incubator-mxnet,likelyzhao/mxnet,sergeykolychev/mxnet,indhub/mxnet,madjam/mxnet,danithaca/mxnet,eric-haibin-lin/mxnet,Ldpe2G/mxnet,solin319/incubator-mxnet,madjam/mxnet,yuruofeifei/mxnet,rahul003/mxnet,rishita/mxnet,indhub/mxnet,xcgoner/dist-mxnet,CodingCat/mxnet,ForkedReposBak/mxnet,stefanhenneking/mxnet,DickJC123/mxnet,sxjscience/mxnet,reminisce/mxnet,navrasio/mxnet,arikpoz/mxnet,LinkHS/incubator-mxnet,pluskid/mxnet,ShownX/incubator-mxnet,precedenceguo/mxnet,ZihengJiang/mxnet,thirdwing/mxnet,luoyetx/mxnet,arikpoz/mxnet,jermainewang/mxnet,larroy/mxnet,piiswrong/mxnet,apaleyes/mxnet,coder-james/mxnet,vikingMei/mxnet,luoyetx/mxnet,Mega-DatA-Lab/mxnet,fullfanta/mxnet,madjam/mxnet,precedenceguo/mxnet,stefanhenneking/mxnet,ForkedReposBak/mxnet,LinkHS/incubator-mxnet,xcgoner/dist-mxnet,szha/mxnet,ForkedReposBak/mxnet,thirdwing/mxnet,EvanzzzZ/mxnet,rishita/mxnet,antoan2/incubator-mxnet,ForkedReposBak/mxnet,navrasio/mxnet,apache/incubator-mxnet,larroy/mxnet,yajiedesign/mxnet,Prasad9/incubator-mxnet,arikpoz/mxnet,hotpxl/mxnet,reminisce/mxnet,DR08/mxnet,sxjscience/mxnet,EvanzzzZ/mxnet,eric-haibin-lin/mxnet,TuSimple/mxnet,Prasad9/incubator-mxnet,EvanzzzZ/mxnet,yajiedesign/mxnet,fullfanta/mxnet,Guneet-Dhillon/mxnet,jermainewang/mxnet,tlby/mxnet,navrasio/mxnet,Northrend/mxnet,antoan2/incubator-mxnet,navrasio/mxnet,tlby/mxnet,likelyzhao/mxnet,Mega-DatA-Lab/mxnet,jiajiechen/mxnet,indhub/mxnet,crazy-cat/incubator-mxnet,tornadomeet/mxnet,CodingCat/mxnet,rahul003/mxnet,saurabh3949/mxnet,eric-haibin-lin/mxnet,kevinthesun/mxnet,vikingMei/mxnet,jennyzhang0215/incubator-mxnet,xcgoner/dist-mxnet,danithaca/mxnet,jiajiechen/mxnet,ShownX/incubator-mxnet,pluskid/mxnet,saurabh3949/mxnet,hesseltuinhof/mxnet,leezu/mxnet,arank/mxnet,precedenceguo/mxnet,hpi-xnor/BMXNet,DR08/mxnet,hesseltuinhof/mxnet,yajiedesign/mxnet,hotpxl/mxnet,luoyetx/mxnet,jamesliu/mxnet,gautamkmr/incubator-mxnet,larroy/mxnet,reminisce/mxnet,jamesliu/mxnet,coder-james/mxnet,leezu/mxnet,ShownX/incubator-mxnet,antoan2/incubator-mxnet,ykim362/mxnet,dmlc/mxnet,luoyetx/mxnet,dmlc/mxnet,crazy-cat/incubator-mxnet,wangyum/mxnet,weleen/mxnet,hotpxl/mxnet,kevinthesun/mxnet,ZihengJiang/mxnet,LinkHS/incubator-mxnet,dmlc/mxnet,indhub/mxnet,tornadomeet/mxnet,lxn2/mxnet,crazy-cat/incubator-mxnet,sxjscience/mxnet,reminisce/mxnet,lxn2/mxnet,hpi-xnor/BMXNet,hesseltuinhof/mxnet,vikingMei/mxnet,larroy/mxnet,stefanhenneking/mxnet,tornadomeet/mxnet,yajiedesign/mxnet,Guneet-Dhillon/mxnet,Ldpe2G/mxnet,antoan2/incubator-mxnet,kevinthesun/mxnet,sxjscience/mxnet,tornadomeet/mxnet