update incorrect migration log message
update incorrect migration log message

It can be upgrade or downgrade, so we should use word "updated" here.

mkumatag/etcd,rnaveiras/etcd,etcd-io/etcd,ajityagaty/etcd,mqliang/etcd,etcd-io/etcd,mqliang/etcd,rnaveiras/etcd,mkumatag/etcd,rnaveiras/etcd,ajityagaty/etcd,etcd-io/etcd,mqliang/etcd,mkumatag/etcd,ajityagaty/etcd