ci: Update release drafter template with comparison link.

- Add link to compare previous and current tags in release notes template
- Ensure easy access to code changes between releases

Author: johnnyhuy

.github/release-drafter.yml

@@ -28,12 +28,12 @@ version-resolver:
 template: |
   ## What's Changed
 
+  [:books: `Compare from $PREVIOUS_TAG`](https://github.com/$OWNER/$REPOSITORY/compare/$PREVIOUS_TAG...$CURRENT_TAG)
+
   $CHANGES
 
   ## Contributors
 
   Thanks to everyone who contributed to this release!
 
   $CONTRIBUTORS
-
-  [:books: `Compare from $PREVIOUS_TAG`](https://github.com/$OWNER/$REPOSITORY/compare/$PREVIOUS_TAG...$CURRENT_TAG)