Improve documentation for security features
Documentation for security features (e.g., https://docs.gitlab.com/ee/user/project/merge_requests/sast_docker.html) reports that you have to add a job, with no additional details. At the end of the paragraph, a link to the job example is available.
Users may think that adding the job name is enough, and it is automatically managed by GitLab. We can clarify it and move the example link on the same paragraph to help understanding.