durable link to cherry pick instructions

Author: nikopen

hack/cherry_pick_pull.sh

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Usage Instructions: https://github.com/kubernetes/community/blob/master/contributors/devel/sig-release/cherry-picks.md
+# Usage Instructions: https://git.k8s.io/community/contributors/devel/sig-release/cherry-picks.md
 
 # Checkout a PR from GitHub. (Yes, this is sitting in a Git tree. How
 # meta.) Assumes you care about pulls from remote "upstream" and