Merge branch 'zj-add-link-docs-index' into 'master'

Add link on API docs index page



See merge request !6190

doc/api/README.md

@@ -11,9 +11,10 @@ following locations:
 - [Award Emoji](award_emoji.md)
 - [Branches](branches.md)
 - [Builds](builds.md)
-- [Build triggers](build_triggers.md)
+- [Build Triggers](build_triggers.md)
 - [Build Variables](build_variables.md)
 - [Commits](commits.md)
+- [Deployments](deployments.md)
 - [Deploy Keys](deploy_keys.md)
 - [Groups](groups.md)
 - [Group Access Requests](access_requests.md)