Improve details around issue template naming

doc/user/project/description_templates.md

@@ -49,8 +49,8 @@ To create a Markdown file:
 
  1. Click the `+` button next to `master` and click **New file**.
  1. Add the name of your issue template to the **File name** text field next to `master`.
-    Make sure words are separated with underscores and that your file has the `.md` extension, for
-    example `feature_request.md`.
+    Make sure that your file has the `.md` extension, for
+    example `feature_request.md` or `Feature Request.md`.
  1. Commit and push to your default branch.
 
 If you don't have a `.gitlab/issue_templates` directory in your repository, you'll need to create it.