Fix broken link in docs/README.md
Fix broken link in docs/README.md

The url without protocol links to the following:
* https://github.com/github/hubot/blob/master/docs/nodejs.org/

Arthraim/merlin,b3nj4m/hubot,msound/hubot,kgrz/hubot,eetuuuu/hubot,Hartmarken/hubot,hubotio/hubot,lisb/hubot,edorsey/hubot,alucardzhou/hubot,plated/hubot,PropertyUX/nubot,scboucher/hubot,rmdelo/appboy-hubot,davidkassa/hubot,dopeboy/hubot,Snorlock/hubot,nandub/hubot,mutewinter/hubot,alexchenfeng/hubot,decaffeinate-examples/hubot,github/hubot,mujiansu/hubot,Drooids/hubot,hubotio/hubot,wyncode/hubot,jianchen2580/hubot,rlugojr/hubot,taojuntjpp/hubot,alexchenfeng/hubot,danielcompton/hubot,rayatbuzzfeed/hubot,codydaig/hubot,voltsdigital/hubot,skcript/skubot,scboucher/hubot,ooohiroyukiooo/hubot,iDTLabssl/hubot,alexchenfeng/hubot,yujiroarai/hws-hubot,jschell/hubot,ClaudeBot/hubot,CobyR/hubot,chadfurman/hubot,mrb/hubot,shinvdu/hubot,Mattlk13/Hubot,minted/hubot,mauricionr/hubot,cycomachead/hubot,andrewpong/awp-hubot,WaleedAshraf/hubot,ajayanandgit/hubot,ouadie-lahdioui/hubot,github/hubot,RiddickSky/hubot,mjurczyk/hubot,aslihandincer/hubot,makii42/hubot,decaffeinate-examples/hubot,pchaigno/hubot,awbauer/hubot,joshsobota/hubot,ykusumi/test-hubot,wieden-kennedy/hubot,zvelo/hubot,ykelvis/hubot,lisb/hubot,nandub/hubot,PropertyUX/nubot,hcxiong/hubot,vkhang55/hubot,kristenmills/hubot,krahman/hubot,bradparks/hubot__github_chat_bot,geoffreyanderson/hubot,armilam/lessonly-bort,jasonrhodes/botzero,leohmoraes/hubot,eshamow/gutterbot,fgbreel/hubot,mchill/hubot,mcanthony/hubot,daudich/hubot,alexchenfeng/hubot,ddmng/brazil82-hubot,kkirsche/hubot,alexchenfeng/hubot,melexis/melexis-hubot,julianromera/hubot,sharabash/hubot,lisb/hubot,lukw00/hubot,ajschex/hubot,tiagochiavericosta/hubot,cameronmcefee/hubot,andrewpong/awp-hubot,AlexandrPuryshev/hubot,alex-zhang/hubot,brodul/hubot,doudoupower/hubot,bgranberry/hubot,poppingtonic/hubot,jasonkarns/hubot,blackwellops/hubot,craig5/hubot,RavenB/hubot,fstehle/hubot,gregkare/hubot,howprice/hubot,GrimDerp/hubot,hotrannam/hubot,rafaell-lycan/Hubot-X9,sdimkov/hubot,limianwang/hubot,keyvanakbary/hubot,michaelansel/hubot,SIOPCO/hubot