Correct deploy.sh documentation
-#!/bin/bash
+#!/usr/bin/env bash
# Copyright 2020 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# See the License for the specific language governing permissions and
# limitations under the License.
-# bump.sh will
-# * ensure there are no pending changes
+# deploy.sh will
# * optionally activate GOOGLE_APPLICATION_CREDENTIALS and configure-docker if set
-# * run //prow:release-push to build and push prow images
-# * update all the cluster/*.yaml files to use the new image tags
+# * ensure the kubectl context exists
+# * run //cluster:prod.apply to update to the specified version
set -o errexit
set -o nounset
