index project settings doc from other indexes

doc/README.md

@@ -53,6 +53,7 @@ Shortcuts to GitLab's most visited docs:
 ### Projects and groups
 
 - [Projects](user/project/index.md):
+  - [Project settings](user/project/settings/index.md)
   - [Create a project](gitlab-basics/create-project.md)
   - [Fork a project](gitlab-basics/fork-project.md)
   - [Importing and exporting projects between instances](user/project/settings/import_export.md).

doc/user/project/index.md

@@ -89,6 +89,10 @@ You can [fork a project](../../gitlab-basics/fork-project.md) in order to:
 from your fork to the upstream project
 - Fork a sample project to work on the top of that
 
+## Project settings
+
+Read through the documentation on [project settings](settings/index.md).
+
 ## Import or export a project
 
 - [Import a project](import/index.md) from: