change link to changelog (#136)

Author: joshuadavidthomas

src/django_twc_package/RELEASING.md.jinja

@@ -56,7 +56,7 @@ When it comes time to cut a new release, follow these steps:
    bumpver update --tag=final
    ```
 
-3. Ensure the [CHANGELOG](CHANGELOG.md) is up to date. If updates are needed, add them now in the release branch.
+3. Ensure the [CHANGELOG](https://github.com/{{ github_owner }}/{{ github_repo }}/blob/main/CHANGELOG.md) is up to date. If updates are needed, add them now in the release branch.
 
 4. Create a pull request from the release branch to `main`.