Fix Typo in api.md.
Fix Typo in api.md.

yichengq/etcd,dterei/etcd,cchamplin/etcd,barakmich/etcd,kkaneda/etcd,Eagle-X/etcd,Timer/etcd,sebschrader/etcd,gtank/etcd,linuxcer/etcd,sinsharat/etcd,gtank/etcd,freeloop1114/etcd,sebrandon1/etcd,a-robinson/etcd,gyuho/etcd,mqliang/etcd,njharman/etcd,oscarrr110/etcd,chai2010-playground/etcd,princeqjzh/etcd,fgbreel/etcd,gae123/etcd,xychu/etcd,tguangch/etcd,a-robinson/etcd,hpcloud/etcd,nkhare/etcd,ravigadde/etcd,wantonsolutions/dinv-etcd,mwitkow/etcd,axingblog/etcd,luxas/etcd,spacejam/etcd,fasaxc/etcd,gityf/etcd,cognusion/etcd,hongchaodeng/etcd,combk8s/etcd,glevand/coreos--etcd,bakins/etcd,heyitsanthony/etcd,shafreeck/etcd,tangkun75/etcd,delkyd/etcd,njharman/etcd,heyitsanthony/etcd,ktateish/etcd,chai2010/etcd,jonboulle/etcd,nieanan/etcd,offscale/etcd,jmptrader/etcd,visheshnp/etcd,YuleiXiao/etcd,mkumatag/etcd,sinsharat/etcd,li-ang/etcd,jeremyeder/etcd,insionng/etcd,imzhulei/etcd,akauppi/etcd,iamqizhao/etcd,crandles/etcd,plasticbox/etcd,chai2010-playground/etcd,gouyang/etcd,glensc/etcd,mqliang/etcd,endocode/etcd,zaphod-concur/etcd,jchauncey/etcd,yudai/etcd,ajityagaty/etcd,glycerine/etcd,princeqjzh/etcd,bakins/etcd,shawnps/etcd,bspline/etcd,OyTao/etcd_learning,lorneli/etcd,mwitkow/etcd,mickep76/etcd,chipironcin/etcd,kkaneda/etcd,mgoelzer/etcd-fork2,xiang90/etcd,rnaveiras/etcd,jmptrader/etcd,kingland/etcd,hongbinz/etcd,armstrongli/etcd,steveeJ/etcd,bdarnell/etcd,hroyrh/etcd,arthurcolle/etcd,mkumatag/etcd,combk8s/etcd,ylong/etcd,xdlinear/etcd,Winslett/etcd,jravetch/etcd,gityf/etcd,HideoYamauchi/etcd,gyuho/etcd,hongchaodeng/etcd,mike-lerch/etcd,es-chow/etcd,mike-lerch/etcd,justintung/etcd,wfxiang08/etcd,dannysauer/etcd,plasticbox/etcd,QuantiumTechnology/etcd,jravetch/etcd,dannysauer/etcd,glensc/etcd,buaazp/etcd,insionng/etcd,joshix/etcd,glevand/coreos--etcd,wantonsolutions/dinv-etcd,whuwxl/etcd,YuleiXiao/etcd,wantonsolutions/dinv-etcd,chenbaihu/etcd,xebitstudios/etcd,qiaochao911/etcd,hpcloud/etcd,lorneli/etcd,pengzj/etcd,vimalk78/etcd,openedbox/etcd,sayden/etcd,fasaxc/etcd,fanminshi/etcd,spacejam/etcd,sofuture/etcd,crandles/etcd,snailwalker/etcd,msanterre/etcd,beni55/etcd,cchamplin/etcd,Timer/etcd,msanterre/etcd,tempbottle/etcd,csuideal/etcd,jonboulle/etcd,dalanlan/etcd,yyljlyy/etcd,mischief/etcd,polvi/etcd,armstrongli/etcd,tempbottle/etcd,chai2010/etcd,arthurcolle/etcd,lumjjb/etcd,qqsun8819/etcd,hroyrh/etcd,youxidev/etcd,SivagnanamCiena/etcd,buaazp/etcd,OyTao/etcd_learning,yyljlyy/etcd,swingbach/etcd,jeremyeder/etcd,tamird/etcd,mitake/etcd,luxas/etcd,insequent/etcd,yudai/etcd,es-chow/etcd,xdlinear/etcd,handsomesun/etcd,purpleidea/etcd,cockroachdb/etcd,siddontang/etcd,lzbgt/etcd,gosharplite/etcd,HideoYamauchi/etcd,fgbreel/etcd,elimisteve/etcd,westhood/etcd,nieanan/etcd,linuxcer/etcd,shawnps/etcd,freeloop1114/etcd,betawaffle/etcd,handsomesun/etcd,elimisteve/etcd,improbable-io/etcd,youxidev/etcd,purpleidea/etcd,dnaeon/etcd,tamird/etcd,raoofm/etcd,visheshnp/etcd,tguangch/etcd,bspline/etcd,etcd-io/etcd,ecnahc515/etcd,onlyjob/etcd,ktateish/etcd,gosharplite/etcd,jchauncey/etcd,rchicoli/etcd,jlamillan/etcd,jlamillan/etcd,mwitkow-io/etcd,Yhgenomics/etcd,njucslqq/etcd,mickep76/etcd,TheHippo/etcd,rnaveiras/etcd,fasaxc/etcd,asim/etcd,cognusion/etcd,rnaveiras/etcd,gae123/etcd,gouyang/etcd,pauldallen/etcd,Yhgenomics/etcd,westhood/etcd,polvi/etcd,Winslett/etcd,iamqizhao/etcd,sebschrader/etcd,QuantiumTechnology/etcd,mgoelzer/etcd-fork2,csuideal/etcd,Eagle-X/etcd,openedbox/etcd,onlyjob/etcd,lzbgt/etcd,snailwalker/etcd,nkhare/etcd,giantswarm/etcd,ecnahc515/etcd,improbable-io/etcd,fanminshi/etcd,SivagnanamCiena/etcd,hzy001/etcd,oscarrr110/etcd,sayden/etcd,ylong/etcd,mwitkow-io/etcd,etcd-io/etcd,lumjjb/etcd,pigfoot/etcd,ajityagaty/etcd,coreos/etcd,delkyd/etcd,zaphod-concur/etcd,olark/etcd,bluebreezecf/etcd,sebrandon1/etcd,swingbach/etcd,raoofm/etcd,axingblog/etcd,jefby/etcd,justintung/etcd,coreos/etcd,CrazyJvm/etcd,devfreesg/etcd,ravigadde/etcd,joshix/etcd,achanda/etcd,hongbinz/etcd,yifan-gu/etcd,pauldallen/etcd,xueshanf/etcd,jefby/etcd,junxu/etcd,achanda/etcd,junxu/etcd,mitake/etcd,robszumski/etcd,xueshanf/etcd,yichengq/etcd,siddontang/etcd,bdarnell/etcd,dalanlan/etcd,honeyqa/etcd,chenbaihu/etcd,nekto0n/etcd,li-ang/etcd,StorReduce/etcd,honeyqa/etcd,asim/etcd,wfxiang08/etcd,dterei/etcd,insequent/etcd,akauppi/etcd,devfreesg/etcd,glycerine/etcd,nekto0n/etcd,giantswarm/etcd,steveeJ/etcd,svdata/etcd,olark/etcd,qiaochao911/etcd,mqliang/etcd,pengzj/etcd,robszumski/etcd,betawaffle/etcd,wowsoso/etcd,StorReduce/etcd,njucslqq/etcd,barakmich/etcd,dnaeon/etcd,beni55/etcd,whuwxl/etcd,ajityagaty/etcd,shakefu/etcd,kingland/etcd,svdata/etcd,xiang90/etcd,yifan-gu/etcd,tangkun75/etcd,chipironcin/etcd,etcd-io/etcd,rchicoli/etcd,qqsun8819/etcd,imzhulei/etcd,xebitstudios/etcd,xychu/etcd,vimalk78/etcd,shafreeck/etcd,mischief/etcd,offscale/etcd,cockroachdb/etcd,mkumatag/etcd,TheHippo/etcd,wowsoso/etcd,shakefu/etcd,hzy001/etcd,sofuture/etcd,endocode/etcd,CrazyJvm/etcd,bluebreezecf/etcd