tools/etcd-dump-logs: fix minor typo
tools/etcd-dump-logs: fix minor typo

Signed-off-by: Gyuho Lee <3454051ee3341eb69bdf6fca40899cdad4d86496@gmail.com>

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