clientv3: fix godoc for member apis
clientv3: fix godoc for member apis

wantonsolutions/dinv-etcd,achanda/etcd,joshix/etcd,siddontang/etcd,glycerine/etcd,mqliang/etcd,tguangch/etcd,zaphod-concur/etcd,dannysauer/etcd,handsomesun/etcd,rnaveiras/etcd,mickep76/etcd,CrazyJvm/etcd,dnaeon/etcd,etcd-io/etcd,endocode/etcd,vimalk78/etcd,jlamillan/etcd,swingbach/etcd,sinsharat/etcd,siddontang/etcd,tguangch/etcd,sebrandon1/etcd,etcd-io/etcd,lorneli/etcd,a-robinson/etcd,mqliang/etcd,rchicoli/etcd,coreos/etcd,fanminshi/etcd,armstrongli/etcd,luxas/etcd,linuxcer/etcd,purpleidea/etcd,jlamillan/etcd,yudai/etcd,sebrandon1/etcd,ravigadde/etcd,fanminshi/etcd,insequent/etcd,xiang90/etcd,linuxcer/etcd,cockroachdb/etcd,OyTao/etcd_learning,li-ang/etcd,ktateish/etcd,mkumatag/etcd,visheshnp/etcd,dannysauer/etcd,YuleiXiao/etcd,gyuho/etcd,akauppi/etcd,hongchaodeng/etcd,sofuture/etcd,mickep76/etcd,hongchaodeng/etcd,handsomesun/etcd,bluebreezecf/etcd,ktateish/etcd,bdarnell/etcd,visheshnp/etcd,insequent/etcd,cockroachdb/etcd,achanda/etcd,chipironcin/etcd,li-ang/etcd,joshix/etcd,glevand/coreos--etcd,nekto0n/etcd,whuwxl/etcd,lumjjb/etcd,plasticbox/etcd,jonboulle/etcd,yudai/etcd,dnaeon/etcd,tamird/etcd,ravigadde/etcd,wantonsolutions/dinv-etcd,ajityagaty/etcd,sofuture/etcd,armstrongli/etcd,ajityagaty/etcd,ajityagaty/etcd,rchicoli/etcd,wantonsolutions/dinv-etcd,whuwxl/etcd,OyTao/etcd_learning,mqliang/etcd,chipironcin/etcd,mkumatag/etcd,endocode/etcd,lumjjb/etcd,lorneli/etcd,YuleiXiao/etcd,xiang90/etcd,StorReduce/etcd,zaphod-concur/etcd,gyuho/etcd,qqsun8819/etcd,akauppi/etcd,rnaveiras/etcd,bdarnell/etcd,qqsun8819/etcd,tamird/etcd,plasticbox/etcd,etcd-io/etcd,swingbach/etcd,westhood/etcd,coreos/etcd,nekto0n/etcd,a-robinson/etcd,sinsharat/etcd,StorReduce/etcd,rnaveiras/etcd,westhood/etcd,purpleidea/etcd,mkumatag/etcd,glycerine/etcd,bluebreezecf/etcd,vimalk78/etcd,heyitsanthony/etcd,jonboulle/etcd,heyitsanthony/etcd,glevand/coreos--etcd,luxas/etcd,CrazyJvm/etcd