change to release

Author: Siedlerchr

CHANGELOG.md

@@ -7,7 +7,7 @@ In case, there is no issue present, the pull request implementing the feature is
 
 Note that this project **does not** adhere to [Semantic Versioning](http://semver.org/).
 
-## [Unreleased]
+## [5.10] - 2023-09-02
 
 ### Added
 
@@ -1108,7 +1108,7 @@ The changelog of JabRef 4.x is available at the [v4.3.1 tag](https://github.com/
 The changelog of JabRef 3.x is available at the [v3.8.2 tag](https://github.com/JabRef/jabref/blob/v3.8.2/CHANGELOG.md).
 The changelog of JabRef 2.11 and all previous versions is available as [text file in the v2.11.1 tag](https://github.com/JabRef/jabref/blob/v2.11.1/CHANGELOG).
 
-[Unreleased]: https://github.com/JabRef/jabref/compare/v5.9...HEAD
+[5.10]: https://github.com/JabRef/jabref/compare/v5.9...v5.10´
 [5.9]: https://github.com/JabRef/jabref/compare/v5.8...v5.9
 [5.8]: https://github.com/JabRef/jabref/compare/v5.7...v5.8
 [5.7]: https://github.com/JabRef/jabref/compare/v5.6...v5.7