FIX missing link in CHANGELOG for v1.3.1

Author: AymDev

CHANGELOG.md

@@ -36,7 +36,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
  - Bundle base
 
-[Unreleased]: https://github.com/AymDev/CommonMarkBundle/compare/v1.3.0...HEAD
+[Unreleased]: https://github.com/AymDev/CommonMarkBundle/compare/v1.3.1...HEAD
+[1.3.1]: https://github.com/AymDev/CommonMarkBundle/compare/v1.3.0...v1.3.1
 [1.3.0]: https://github.com/AymDev/CommonMarkBundle/compare/v1.2.0...v1.3.0
 [1.2.0]: https://github.com/AymDev/CommonMarkBundle/compare/v1.1.1...v1.2.0
 [1.1.1]: https://github.com/AymDev/CommonMarkBundle/compare/v1.1.0...v1.1.1