Merge branch 'dz-backport-codeclimate-docs' into 'master'

Backport CI codeclimate example doc change from EE

See merge request !11903

doc/ci/examples/code_climate.md

 # Analyze project code quality with Code Climate CLI
 
-This example shows how to run [Code Climate CLI][cli] on your code by using\
+This example shows how to run [Code Climate CLI][cli] on your code by using
 GitLab CI and Docker.
 
-First, you need GitLab Runner with [docker-in-docker executor](../docker/using_docker_build.md#use-docker-in-docker-executor).
+First, you need GitLab Runner with [docker-in-docker executor][dind].
 
-Once you setup the Runner add new job to `.gitlab-ci.yml`:
+Once you set up the Runner, add a new job to `.gitlab-ci.yml`, called `codeclimate`:
 
 ```yaml
 codeclimate:
@@ -25,4 +25,10 @@ codeclimate:
 This will create a `codeclimate` job in your CI pipeline and will allow you to
 download and analyze the report artifact in JSON format.
 
+For GitLab [Enterprise Edition Starter][ee] users, this information can be automatically
+extracted and shown right in the merge request widget. [Learn more on code quality
+diffs in merge requests](http://docs.gitlab.com/ee/user/project/merge_requests/code_quality_diff.md).
+
 [cli]: https://github.com/codeclimate/codeclimate
+[dind]: ../docker/using_docker_build.md#use-docker-in-docker-executor
+[ee]: https://about.gitlab.com/gitlab-ee/