contrib/raftexample: fix typo
contrib/raftexample: fix typo

gyuho/etcd,ajityagaty/etcd,mkumatag/etcd,vimalk78/etcd,ajityagaty/etcd,cockroachdb/etcd,sebrandon1/etcd,sebrandon1/etcd,mkumatag/etcd,rnaveiras/etcd,mqliang/etcd,glevand/coreos--etcd,joshix/etcd,etcd-io/etcd,rnaveiras/etcd,etcd-io/etcd,joshix/etcd,dannysauer/etcd,bdarnell/etcd,ajityagaty/etcd,li-ang/etcd,xiang90/etcd,vimalk78/etcd,coreos/etcd,sinsharat/etcd,xiang90/etcd,glevand/coreos--etcd,etcd-io/etcd,mqliang/etcd,bdarnell/etcd,cockroachdb/etcd,dannysauer/etcd,gyuho/etcd,sinsharat/etcd,li-ang/etcd,mkumatag/etcd,mqliang/etcd,rnaveiras/etcd,coreos/etcd