Merge branch 'patch-31' into 'master'

Update comment in Auto-DevOps.gitlab-ci.yml

See merge request gitlab-org/gitlab-ce!23013

lib/gitlab/ci/templates/Auto-DevOps.gitlab-ci.yml

@@ -27,7 +27,7 @@
 # Continuous deployment to production is enabled by default.
 # If you want to deploy to staging first, set STAGING_ENABLED environment variable.
 # If you want to enable incremental rollout, either manual or time based,
-# set INCREMENTAL_ROLLOUT_TYPE environment variable to "manual" or "timed".
+# set INCREMENTAL_ROLLOUT_MODE environment variable to "manual" or "timed".
 # If you want to use canary deployments, set CANARY_ENABLED environment variable.
 #
 # If Auto DevOps fails to detect the proper buildpack, or if you want to