add version compare link

Author: osiegmar

CHANGELOG.md

@@ -144,6 +144,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release
 
+[5.0.1]: https://github.com/osiegmar/logback-gelf/compare/v5.0.0...v5.0.1
 [5.0.0]: https://github.com/osiegmar/logback-gelf/compare/v4.0.2...v5.0.0
 [4.0.2]: https://github.com/osiegmar/logback-gelf/compare/v4.0.1...v4.0.2
 [4.0.1]: https://github.com/osiegmar/logback-gelf/compare/v4.0.0...v4.0.1