Improve formatting of release notes

Author: JanJakes

.github/workflows/release-publish.yml

@@ -108,9 +108,9 @@ jobs:
             PRERELEASE_FLAG="--prerelease"
           fi
 
-          NOTES="$BODY"
+          NOTES="$(printf '## Changelog\n\n%s' "$BODY")"
           if [ -n "$CONTRIBUTORS" ]; then
-            NOTES="$(printf '%s\n\n**Contributors:** %s' "$BODY" "$CONTRIBUTORS")"
+            NOTES="$(printf '%s\n\n## Contributors\n\nThe following contributors merged PRs in this release:\n\n%s' "$NOTES" "$CONTRIBUTORS")"
           fi
 
           gh release create "$TAG" \