libraries-and-tools.md: correct project name to etcd
libraries-and-tools.md: correct project name to etcd

etcd is the official name of the project.

Winslett/etcd,mkumatag/etcd,combk8s/etcd,wantonsolutions/dinv-etcd,coreos/etcd,jeremyeder/etcd,jlamillan/etcd,armstrongli/etcd,purpleidea/etcd,luxas/etcd,fgbreel/etcd,gouyang/etcd,StorReduce/etcd,gyuho/etcd,fgbreel/etcd,visheshnp/etcd,beni55/etcd,yichengq/etcd,vimalk78/etcd,HideoYamauchi/etcd,tamird/etcd,lorneli/etcd,yudai/etcd,armstrongli/etcd,akauppi/etcd,sebrandon1/etcd,rchicoli/etcd,improbable-io/etcd,gae123/etcd,whuwxl/etcd,OyTao/etcd_learning,OyTao/etcd_learning,endocode/etcd,mickep76/etcd,iamqizhao/etcd,HideoYamauchi/etcd,bdarnell/etcd,westhood/etcd,sinsharat/etcd,hongbinz/etcd,hroyrh/etcd,asim/etcd,visheshnp/etcd,xdlinear/etcd,sofuture/etcd,cockroachdb/etcd,cockroachdb/etcd,hongchaodeng/etcd,whuwxl/etcd,lorneli/etcd,fasaxc/etcd,pauldallen/etcd,coreos/etcd,chipironcin/etcd,buaazp/etcd,siddontang/etcd,glycerine/etcd,msanterre/etcd,etcd-io/etcd,sebrandon1/etcd,fanminshi/etcd,ravigadde/etcd,hongbinz/etcd,tguangch/etcd,plasticbox/etcd,CrazyJvm/etcd,vimalk78/etcd,Eagle-X/etcd,buaazp/etcd,fasaxc/etcd,hongchaodeng/etcd,dannysauer/etcd,plasticbox/etcd,raoofm/etcd,gouyang/etcd,lumjjb/etcd,xdlinear/etcd,mkumatag/etcd,akauppi/etcd,beni55/etcd,handsomesun/etcd,etcd-io/etcd,bluebreezecf/etcd,asim/etcd,achanda/etcd,qqsun8819/etcd,gae123/etcd,zaphod-concur/etcd,YuleiXiao/etcd,xiang90/etcd,rnaveiras/etcd,oscarrr110/etcd,TheHippo/etcd,endocode/etcd,kkaneda/etcd,nekto0n/etcd,dnaeon/etcd,linuxcer/etcd,wowsoso/etcd,giantswarm/etcd,a-robinson/etcd,mkumatag/etcd,dannysauer/etcd,swingbach/etcd,fanminshi/etcd,luxas/etcd,pauldallen/etcd,heyitsanthony/etcd,StorReduce/etcd,glevand/coreos--etcd,a-robinson/etcd,combk8s/etcd,iamqizhao/etcd,mickep76/etcd,li-ang/etcd,joshix/etcd,fasaxc/etcd,sinsharat/etcd,sayden/etcd,Winslett/etcd,glycerine/etcd,yichengq/etcd,delkyd/etcd,tamird/etcd,improbable-io/etcd,wantonsolutions/dinv-etcd,linuxcer/etcd,dnaeon/etcd,jchauncey/etcd,giantswarm/etcd,xychu/etcd,siddontang/etcd,CrazyJvm/etcd,chipironcin/etcd,Timer/etcd,yudai/etcd,glevand/coreos--etcd,raoofm/etcd,handsomesun/etcd,Eagle-X/etcd,rnaveiras/etcd,achanda/etcd,westhood/etcd,bluebreezecf/etcd,ktateish/etcd,delkyd/etcd,Timer/etcd,cchamplin/etcd,lumjjb/etcd,hroyrh/etcd,zaphod-concur/etcd,sofuture/etcd,insequent/etcd,gyuho/etcd,TheHippo/etcd,nekto0n/etcd,cchamplin/etcd,oscarrr110/etcd,rchicoli/etcd,xiang90/etcd,purpleidea/etcd,jchauncey/etcd,shawnps/etcd,mqliang/etcd,etcd-io/etcd,wantonsolutions/dinv-etcd,YuleiXiao/etcd,xychu/etcd,sayden/etcd,jeremyeder/etcd,insequent/etcd,ktateish/etcd,wowsoso/etcd,ajityagaty/etcd,qqsun8819/etcd,jlamillan/etcd,msanterre/etcd,rnaveiras/etcd,mqliang/etcd,jonboulle/etcd,ajityagaty/etcd,ravigadde/etcd,mike-lerch/etcd,mqliang/etcd,swingbach/etcd,heyitsanthony/etcd,jonboulle/etcd,joshix/etcd,mike-lerch/etcd,tguangch/etcd,li-ang/etcd,ajityagaty/etcd,kkaneda/etcd,shawnps/etcd,bdarnell/etcd