chore: update PR template to request better release notes (#16080)

.github/PULL_REQUEST_TEMPLATE.md

@@ -14,9 +14,9 @@ Contributors guide: https://github.com/electron/electron/blob/master/CONTRIBUTIN
 - [ ] tests are [changed or added](https://github.com/electron/electron/blob/master/docs/development/testing.md)
 - [ ] relevant documentation is changed or added
 - [ ] PR title follows semantic [commit guidelines](https://github.com/electron/electron/blob/master/docs/development/pull-requests.md#commit-message-guidelines)
+- [ ] PR release notes describe the change in a way relevant to app-developers
 
 
 #### Release Notes
-<!-- Used to describe release notes for future release versions. Use `no-notes` to indicate no user-facing changes. -->
 
-Notes: <!-- One-line Change Summary Here-->
+Notes: <!-- Please add a one-line description for app developers to read in the release notes. Examples and help on special cases: https://github.com/electron/clerk/blob/master/README.md#examples -->