minor update to release instructions

correcting the git push command.

RELEASE.md

@@ -5,6 +5,6 @@ The Kubernetes Template Project is released on an as-needed basis. The process i
 1. An issue is proposing a new release with a changelog since the last release
 1. All [OWNERS](OWNERS) must LGTM this release
 1. Before tagging a new release, ensure that the `metadata.yaml` and `clusterctl-settings.json` files are up to date
-1. An OWNER runs `git tag -s $VERSION` and inserts the changelog and pushes the tag with `git push $VERSION`
+1. An OWNER runs `git tag -s $VERSION` and inserts the changelog and pushes the tag with `git push $REPO $VERSION`
 1. The release issue is closed
 1. An announcement email is sent to `[email protected]` with the subject `[ANNOUNCE] Cluster API Kubemark provider $VERSION is released`