Rename SAST Docker docs

doc/ci/examples/README.md

@@ -44,7 +44,7 @@ There's also a collection of repositories with [example projects](https://gitlab
 ### Static Application Security Testing (SAST)
 
 - [Scan your code for vulnerabilities](sast.md)
-- [Scan your docker image for vulnerabilities](sast-image.md)
+- [Scan your Docker images for vulnerabilities](sast_docker.md)
 
 ### Dynamic Application Security Testing (DAST)
 

doc/ci/examples/sast-image.md → doc/ci/examples/sast_docker.md

@@ -42,6 +42,6 @@ Starting with GitLab Enterprise Edition Ultimate 10.3, this information will
 be automatically extracted and shown right in the merge request widget. To do
 so, the CI job must be named `sast:image` and the artifact path must be
 `gl-sast-image-report.json`.
-[Learn more on application security testing results shown in merge requests](../../user/project/merge_requests/sast-image.md).
+[Learn more on application security testing results shown in merge requests](../../user/project/merge_requests/sast_docker.md).
 
 [ee]: https://about.gitlab.com/gitlab-ee/