Standardize changelog entry

Author: diogobeda

CHANGELOG.md

@@ -9,7 +9,7 @@ Changes since the last non-beta release.
 
 _Please add entries here for your pull requests that are not yet released._
 
-- Prevent roots from being re-created when using React 18
+- Prevent roots from being re-created when using React 18 [PR 1305](https://github.com/reactjs/react-rails/pull/1305) by [diogobeda](https://github.com/diogobeda)
 
 #### Changed
 - Make es6 and ts usable at same time. #1299