Merge branch 'docs-fl-fe-guide' into 'master'

Updates frontend to Frontend

See merge request gitlab-org/gitlab-ce!30631

doc/development/README.md

@@ -22,7 +22,7 @@ description: 'Learn how to contribute to GitLab.'
 - [Security process for developers](https://gitlab.com/gitlab-org/release/docs/blob/master/general/security/developer.md#security-releases-critical-non-critical-as-a-developer)
 - [Requesting access to Chatops on GitLab.com](chatops_on_gitlabcom.md#requesting-access) (for GitLabbers)
-## UX and frontend guides
+## UX and Frontend guides
 - [GitLab Design System](https://design.gitlab.com/) for building GitLab with existing CSS styles and elements
 - [Frontend guidelines](fe_guide/index.md)