Update guide for 6.3 to 6.4
Update guide for 6.3 to 6.4

Signed-off-by: Dmitriy Zaporozhets <be23d75b156792e5acab51b196a2deb155d35d6a@gmail.com>

bbodenmiller/gitlabhq,pulkit21/gitlabhq,yonglehou/gitlabhq,allysonbarros/gitlabhq,kemenaran/gitlabhq,Kambda/Mobbr,jaepyoung/gitlabhq,8thcolor/testing-public-gitlabhq,DanielZhangQingLong/gitlabhq,michaKFromParis/gitlabhq,chenrui2014/gitlabhq,cinderblock/gitlabhq,louahola/gitlabhq,michaKFromParis/gitlabhq,yfaizal/gitlabhq,dwrensha/gitlabhq,gorgee/gitlabhq,szechyjs/gitlabhq,123Haynes/gitlabhq,Datacom/gitlabhq,cncodog/gitlab,t-zuehlsdorff/gitlabhq,ZeoAlliance/gitlabhq,jirutka/gitlabhq,johnmyqin/gitlabhq,allistera/gitlabhq,LytayTOUCH/gitlabhq,DanielZhangQingLong/gitlabhq,mmkassem/gitlabhq,daiyu/gitlab-zh,jrjang/gitlab-ce,cncodog/gitlab,since2014/gitlabhq,sekcheong/gitlabhq,icedwater/gitlabhq,gopeter/gitlabhq,dvrylc/gitlabhq,SVArago/gitlabhq,tk23/gitlabhq,yuyue2013/ss,Telekom-PD/gitlabhq,copystudy/gitlabhq,jrjang/gitlabhq,Tyrael/gitlabhq,hq804116393/gitlabhq,liyakun/gitlabhq,since2014/gitlabhq,dreampet/gitlab,ferdinandrosario/gitlabhq,openwide-java/gitlabhq,per-garden/gitlabhq,SVArago/gitlabhq,LytayTOUCH/gitlabhq,sekcheong/gitlabhq,NKMR6194/gitlabhq,darkrasid/gitlabhq,atomaka/gitlabhq,DanielZhangQingLong/gitlabhq,sue445/gitlabhq,openwide-java/gitlabhq,LytayTOUCH/gitlabhq,axilleas/gitlabhq,eliasp/gitlabhq,t-zuehlsdorff/gitlabhq,it33/gitlabhq,ngpestelos/gitlabhq,H3Chief/gitlabhq,tk23/gitlabhq,TheWatcher/gitlabhq,yonglehou/gitlabhq,pulkit21/gitlabhq,SVArago/gitlabhq,NKMR6194/gitlabhq,Datacom/gitlabhq,bbodenmiller/gitlabhq,ordiychen/gitlabhq,ttasanen/gitlabhq,Kambda/Mobbr,pjknkda/gitlabhq,Exeia/gitlabhq,bozaro/gitlabhq,gorgee/gitlabhq,tk23/gitlabhq,rfeese/gitlab-ce,wangcan2014/gitlabhq,eliasp/gitlabhq,michaKFromParis/gitlabhqold,jaepyoung/gitlabhq,SkyWei/gitlabhq,ferdinandrosario/gitlabhq,Devin001/gitlabhq,Telekom-PD/gitlabhq,Keystion/gitlabhq,folpindo/gitlabhq,OtkurBiz/gitlabhq,it33/gitlabhq,hzy001/gitlabhq,childbamboo/gitlabhq,jrjang/gitlab-ce,dvrylc/gitlabhq,stanhu/gitlabhq,iiet/iiet-git,fantasywind/gitlabhq,dvrylc/gitlabhq,Razer6/gitlabhq,hzy001/gitlabhq,initiummedia/gitlabhq,zBMNForks/gitlabhq,daiyu/gitlab-zh,flashbuckets/gitlabhq,hq804116393/gitlabhq,LUMC/gitlabhq,H3Chief/gitlabhq,jairzh/gitlabhq-sfdc,rebecamendez/gitlabhq,bladealslayer/gitlabhq,ibiart/gitlabhq,stanhu/gitlabhq,joalmeid/gitlabhq,michaKFromParis/sparkslab,initiummedia/gitlabhq,Burick/gitlabhq,fendoudeqingchunhh/gitlabhq,Burick/gitlabhq,jaepyoung/gitlabhq,akumetsuv/gitlab,NKMR6194/gitlabhq,dukex/gitlabhq,NARKOZ/gitlabhq,sideci-sample/sideci-sample-gitlabhq,Soullivaneuh/gitlabhq,flashbuckets/gitlabhq,mmkassem/gitlabhq,louahola/gitlabhq,cui-liqiang/gitlab-ce,pulkit21/gitlabhq,theodi/gitlabhq,initiummedia/gitlabhq,tim-hoff/gitlabhq,jaepyoung/gitlabhq,jvanbaarsen/gitlabhq,dplarson/gitlabhq,OlegGirko/gitlab-ce,jvanbaarsen/gitlabhq,ibiart/gitlabhq,stellamiranda/mobbr-gitlabhq,H3Chief/gitlabhq,Razer6/gitlabhq,mr-dxdy/gitlabhq,kotaro-dev/gitlab-6-9,dukex/gitlabhq,Telekom-PD/gitlabhq,mavimo/gitlabhq,sakishum/gitlabhq,windymid/test2,larryli/gitlabhq,htve/GitlabForChinese,theodi/gitlabhq,aaronsnyder/gitlabhq,yatish27/gitlabhq,pkgr/gitlabhq,yama07/gitlabhq,fgbreel/gitlabhq,yuyue2013/ss,rhels/gitlabhq,youprofit/gitlabhq,sue445/gitlabhq,delkyd/gitlabhq,t-zuehlsdorff/gitlabhq,jairzh/gitlabhq-sfdc,chadyred/gitlabhq,jirutka/gitlabhq,pjknkda/gitlabhq,kitech/gitlabhq,mr-dxdy/gitlabhq,dreampet/gitlab,youprofit/gitlabhq,123Haynes/gitlabhq,dwrensha/gitlabhq,chenrui2014/gitlabhq,tim-hoff/gitlabhq,salipro4ever/gitlabhq,dreampet/gitlab,per-garden/gitlabhq,pulkit21/gitlabhq,fendoudeqingchunhh/gitlabhq,mente/gitlabhq,iiet/iiet-git,cinderblock/gitlabhq,theonlydoo/gitlabhq,ttasanen/gitlabhq,hzy001/gitlabhq,sekcheong/gitlabhq,Kambda/mobbr-gitlabhq,bozaro/gitlabhq,mathstuf/gitlabhq,liyakun/gitlabhq,sue445/gitlabhq,NuLL3rr0r/gitlabhq,wangcan2014/gitlabhq,williamherry/gitlabhq,bladealslayer/gitlabhq,ngpestelos/gitlabhq,revaret/gitlabhq,eliasp/gitlabhq,theonlydoo/gitlabhq,whluwit/gitlabhq,manfer/gitlabhq,yulchitaj/TEST3,koreamic/gitlabhq,LytayTOUCH/gitlabhq,gorgee/gitlabhq,vjustov/gitlabhq,dreampet/gitlab,jrjang/gitlabhq,rebecamendez/gitlabhq,Datacom/gitlabhq,mathstuf/gitlabhq,fscherwi/gitlabhq,yonglehou/gitlabhq,yuyue2013/ss,gopeter/gitlabhq,fearenales/gitlabhq,ngpestelos/gitlabhq,NARKOZ/gitlabhq,kemenaran/gitlabhq,chenrui2014/gitlabhq,zrbsprite/gitlabhq,OtkurBiz/gitlabhq,iiet/iiet-git,k4zzk/gitlabhq,allistera/gitlabhq,hacsoc/gitlabhq,childbamboo/gitlabhq,Soullivaneuh/gitlabhq,fearenales/gitlabhq,since2014/gitlabhq,shinexiao/gitlabhq,dwrensha/gitlabhq,pkallberg/tjenare,phinfonet/mobbr-gitlabhq,bozaro/gitlabhq,rumpelsepp/gitlabhq,martinma4/gitlabhq,ordiychen/gitlabhq,TheWatcher/gitlabhq,WSDC-NITWarangal/gitlabhq,it33/gitlabhq,aaronsnyder/gitlabhq,julianengel/gitlabhq,rhels/gitlabhq,bladealslayer/gitlabhq,michaKFromParis/gitlabhq,jvanbaarsen/gitlabhq,WSDC-NITWarangal/gitlabhq,lvfeng1130/gitlabhq,OlegGirko/gitlab-ce,ikappas/gitlabhq,tim-hoff/gitlabhq,theonlydoo/gitlabhq,TheWatcher/gitlabhq,WSDC-NITWarangal/gitlabhq,fearenales/gitlabhq,hacsoc/gitlabhq,allysonbarros/gitlabhq,yama07/gitlabhq,ayufan/gitlabhq,atomaka/gitlabhq,ksoichiro/gitlabhq,k4zzk/gitlabhq,xuvw/gitlabhq,mathstuf/gitlabhq,SkyWei/gitlabhq,Kambda/mobbr-gitlabhq,stellamiranda/mobbr-gitlabhq,wangcan2014/gitlabhq,fgbreel/gitlabhq,yatish27/gitlabhq,LUMC/gitlabhq,martijnvermaat/gitlabhq,liyakun/gitlabhq,theonlydoo/gitlabhq,cui-liqiang/gitlab-ce,atomaka/gitlabhq,screenpages/gitlabhq,folpindo/gitlabhq,luzhongyang/gitlabhq,mente/gitlabhq,tim-hoff/gitlabhq,childbamboo/gitlabhq,koreamic/gitlabhq,jirutka/gitlabhq,fpgentil/gitlabhq,ibiart/gitlabhq,shinexiao/gitlabhq,dvrylc/gitlabhq,windymid/test2,stanhu/gitlabhq,ikappas/gitlabhq,OlegGirko/gitlab-ce,MauriceMohlek/gitlabhq,martijnvermaat/gitlabhq,jvanbaarsen/gitlabhq,rumpelsepp/gitlabhq,delkyd/gitlabhq,nmav/gitlabhq,vjustov/gitlabhq,duduribeiro/gitlabhq,duduribeiro/gitlabhq,bigsurge/gitlabhq,kitech/gitlabhq,theodi/gitlabhq,daiyu/gitlab-zh,ksoichiro/gitlabhq,williamherry/gitlabhq,nguyen-tien-mulodo/gitlabhq,fscherwi/gitlabhq,dplarson/gitlabhq,mavimo/gitlabhq,icedwater/gitlabhq,lvfeng1130/gitlabhq,martinma4/gitlabhq,rhels/gitlabhq,rfeese/gitlab-ce,bozaro/gitlabhq,fendoudeqingchunhh/gitlabhq,adaiguoguo/gitlab_globalserarch,SVArago/gitlabhq,OtkurBiz/gitlabhq,martijnvermaat/gitlabhq,sonalkr132/gitlabhq,it33/gitlabhq,revaret/gitlabhq,Datacom/gitlabhq,stoplightio/gitlabhq,manfer/gitlabhq,tempbottle/gitlabhq,joalmeid/gitlabhq,iiet/iiet-git,michaKFromParis/sparkslab,sakishum/gitlabhq,jairzh/gitlabhq-sfdc,copystudy/gitlabhq,ayufan/gitlabhq,joalmeid/gitlabhq,larryli/gitlabhq,nguyen-tien-mulodo/gitlabhq,mrb/gitlabhq,hacsoc/gitlabhq,manfer/gitlabhq,salipro4ever/gitlabhq,fpgentil/gitlabhq,allistera/gitlabhq,yama07/gitlabhq,Exeia/gitlabhq,chenrui2014/gitlabhq,Exeia/gitlabhq,julianengel/gitlabhq,k4zzk/gitlabhq,cinderblock/gitlabhq,axilleas/gitlabhq,Soullivaneuh/gitlabhq,per-garden/gitlabhq,ksoichiro/gitlabhq,copystudy/gitlabhq,dukex/gitlabhq,nmav/gitlabhq,pjknkda/gitlabhq,NARKOZ/gitlabhq,k4zzk/gitlabhq,chadyred/gitlabhq,akumetsuv/gitlab,martinma4/gitlabhq,screenpages/gitlabhq,martijnvermaat/gitlabhq,allysonbarros/gitlabhq,Keystion/gitlabhq,xuvw/gitlabhq,8thcolor/testing-public-gitlabhq,fantasywind/gitlabhq,yuyue2013/ss,julianengel/gitlabhq,tempbottle/gitlabhq,Devin001/gitlabhq,manfer/gitlabhq,initiummedia/gitlabhq,copystudy/gitlabhq,kemenaran/gitlabhq,NARKOZ/gitlabhq,whluwit/gitlabhq,NuLL3rr0r/gitlabhq,tempbottle/gitlabhq,phinfonet/mobbr-gitlabhq,ZeoAlliance/gitlabhq,fantasywind/gitlabhq,MauriceMohlek/gitlabhq,louahola/gitlabhq,salipro4ever/gitlabhq,yama07/gitlabhq,Kambda/mobbr-gitlabhq,hacsoc/gitlabhq,openwide-java/gitlabhq,kotaro-dev/gitlab-6-9,since2014/gitlabhq,hq804116393/gitlabhq,stoplightio/gitlabhq,per-garden/gitlabhq,nguyen-tien-mulodo/gitlabhq,zBMNForks/gitlabhq,mmkassem/gitlabhq,sakishum/gitlabhq,NKMR6194/gitlabhq,mrb/gitlabhq,hq804116393/gitlabhq,jirutka/gitlabhq,fpgentil/gitlabhq,wangcan2014/gitlabhq,pkgr/gitlabhq,yatish27/gitlabhq,mavimo/gitlabhq,darkrasid/gitlabhq,mrb/gitlabhq,folpindo/gitlabhq,windymid/test2,julianengel/gitlabhq,theodi/gitlabhq,whluwit/gitlabhq,rfeese/gitlab-ce,sonalkr132/gitlabhq,ttasanen/gitlabhq,bigsurge/gitlabhq,sue445/gitlabhq,aaronsnyder/gitlabhq,SkyWei/gitlabhq,screenpages/gitlabhq,yulchitaj/TEST3,vjustov/gitlabhq,ordiychen/gitlabhq,Devin001/gitlabhq,cui-liqiang/gitlab-ce,stoplightio/gitlabhq,Kambda/Mobbr,MauriceMohlek/gitlabhq,dplarson/gitlabhq,ttasanen/gitlabhq,mr-dxdy/gitlabhq,rumpelsepp/gitlabhq,salipro4ever/gitlabhq,mente/gitlabhq,Keystion/gitlabhq,williamherry/gitlabhq,123Haynes/gitlabhq,kemenaran/gitlabhq,SkyWei/gitlabhq,flashbuckets/gitlabhq,rfeese/gitlab-ce,bigsurge/gitlabhq,stellamiranda/mobbr-gitlabhq,ZeoAlliance/gitlabhq,sideci-sample/sideci-sample-gitlabhq,fgbreel/gitlabhq,TheWatcher/gitlabhq,zrbsprite/gitlabhq,kitech/gitlabhq,darkrasid/gitlabhq,revaret/gitlabhq,eliasp/gitlabhq,screenpages/gitlabhq,shinexiao/gitlabhq,childbamboo/gitlabhq,larryli/gitlabhq,mrb/gitlabhq,fscherwi/gitlabhq,fearenales/gitlabhq,Tyrael/gitlabhq,mmkassem/gitlabhq,whluwit/gitlabhq,flashbuckets/gitlabhq,MauriceMohlek/gitlabhq,daiyu/gitlab-zh,cncodog/gitlab,jrjang/gitlabhq,luzhongyang/gitlabhq,ferdinandrosario/gitlabhq,fantasywind/gitlabhq,bbodenmiller/gitlabhq,luzhongyang/gitlabhq,cinderblock/gitlabhq,kitech/gitlabhq,Devin001/gitlabhq,8thcolor/testing-public-gitlabhq,shinexiao/gitlabhq,vjustov/gitlabhq,michaKFromParis/gitlabhq,gorgee/gitlabhq,sonalkr132/gitlabhq,DanielZhangQingLong/gitlabhq,luzhongyang/gitlabhq,martinma4/gitlabhq,cncodog/gitlab,Burick/gitlabhq,tk23/gitlabhq,cui-liqiang/gitlab-ce,rebecamendez/gitlabhq,H3Chief/gitlabhq,dplarson/gitlabhq,ikappas/gitlabhq,adaiguoguo/gitlab_globalserarch,mente/gitlabhq,koreamic/gitlabhq,htve/GitlabForChinese,rhels/gitlabhq,michaKFromParis/sparkslab,htve/GitlabForChinese,sideci-sample/sideci-sample-gitlabhq,sakishum/gitlabhq,tempbottle/gitlabhq,bbodenmiller/gitlabhq,darkrasid/gitlabhq,fgbreel/gitlabhq,Burick/gitlabhq,pkallberg/tjenare,bigsurge/gitlabhq,t-zuehlsdorff/gitlabhq,yulchitaj/TEST3,larryli/gitlabhq,Razer6/gitlabhq,aaronsnyder/gitlabhq,lvfeng1130/gitlabhq,yatish27/gitlabhq,mathstuf/gitlabhq,WSDC-NITWarangal/gitlabhq,mavimo/gitlabhq,kotaro-dev/gitlab-6-9,nmav/gitlabhq,zBMNForks/gitlabhq,szechyjs/gitlabhq,williamherry/gitlabhq,NuLL3rr0r/gitlabhq,zrbsprite/gitlabhq,rumpelsepp/gitlabhq,johnmyqin/gitlabhq,jrjang/gitlabhq,yfaizal/gitlabhq,michaKFromParis/gitlabhqold,sekcheong/gitlabhq,gopeter/gitlabhq,szechyjs/gitlabhq,OlegGirko/gitlab-ce,axilleas/gitlabhq,ayufan/gitlabhq,stanhu/gitlabhq,akumetsuv/gitlab,johnmyqin/gitlabhq,jrjang/gitlab-ce,michaKFromParis/gitlabhqold,icedwater/gitlabhq,chadyred/gitlabhq,yfaizal/gitlabhq,youprofit/gitlabhq,sonalkr132/gitlabhq,mr-dxdy/gitlabhq,phinfonet/mobbr-gitlabhq,revaret/gitlabhq,ferdinandrosario/gitlabhq,pkgr/gitlabhq,hzy001/gitlabhq,nguyen-tien-mulodo/gitlabhq,koreamic/gitlabhq,delkyd/gitlabhq,duduribeiro/gitlabhq,lvfeng1130/gitlabhq,Razer6/gitlabhq,Exeia/gitlabhq,szechyjs/gitlabhq,yonglehou/gitlabhq,adaiguoguo/gitlab_globalserarch,nmav/gitlabhq,folpindo/gitlabhq,delkyd/gitlabhq,dukex/gitlabhq,michaKFromParis/sparkslab,yulchitaj/TEST3,pkallberg/tjenare,htve/GitlabForChinese,Telekom-PD/gitlabhq,stoplightio/gitlabhq,chadyred/gitlabhq,Tyrael/gitlabhq,axilleas/gitlabhq,jairzh/gitlabhq-sfdc,joalmeid/gitlabhq,liyakun/gitlabhq,xuvw/gitlabhq,Soullivaneuh/gitlabhq,allysonbarros/gitlabhq,pjknkda/gitlabhq,ayufan/gitlabhq,icedwater/gitlabhq,louahola/gitlabhq,Keystion/gitlabhq,johnmyqin/gitlabhq,adaiguoguo/gitlab_globalserarch,ngpestelos/gitlabhq,yfaizal/gitlabhq,rebecamendez/gitlabhq,OtkurBiz/gitlabhq,youprofit/gitlabhq,michaKFromParis/gitlabhqold,ikappas/gitlabhq,ordiychen/gitlabhq,fendoudeqingchunhh/gitlabhq,LUMC/gitlabhq,LUMC/gitlabhq,ksoichiro/gitlabhq,gopeter/gitlabhq,jrjang/gitlab-ce,fscherwi/gitlabhq,allistera/gitlabhq,zrbsprite/gitlabhq,fpgentil/gitlabhq,duduribeiro/gitlabhq,Tyrael/gitlabhq,openwide-java/gitlabhq,zBMNForks/gitlabhq,dwrensha/gitlabhq