Merge branch 'mrchrisw-update-deploy-key' into 'master'

Fix inconsistent deploy key documentation in UI

See merge request !9817

app/views/projects/deploy_keys/_index.html.haml

@@ -3,7 +3,7 @@
     %h4.prepend-top-0
       Deploy Keys
     %p
-      Deploy keys allow read-only access to your repository. Deploy keys can be used for CI, staging or production servers. You can create a deploy key or add an existing one.
+      Deploy keys allow read-only or read-write (if enabled) access to your repository. Deploy keys can be used for CI, staging or production servers. You can create a deploy key or add an existing one.
   .col-lg-9
     %h5.prepend-top-0
       Create a new deploy key for this project