Fix Changelog links

Author: ziopio

CHANGELOG.md

@@ -101,8 +101,8 @@ disconnected from the server.
 - Use grisp_cryptoauth TLS helper to generate TLS options.
 - Start integrating grisp updater.
 
-[Unreleased]: https://github.com/grisp/grisp_connect/compare/2.2.0...HEAD
-[2.2.0]: https://github.com/grisp/grisp_connect/compare/2.1.0...2.2.0
+[Unreleased]: https://github.com/grisp/grisp_connect/compare/3.0.0...HEAD
+[3.0.0]: https://github.com/grisp/grisp_connect/compare/2.1.0...3.0.0
 [2.1.0]: https://github.com/grisp/grisp_connect/compare/2.0.0...2.1.0
 [2.0.0]: https://github.com/grisp/grisp_connect/compare/1.1.0...2.0.0
 [1.1.0]: https://github.com/grisp/grisp_connect/compare/1.0.0...1.1.0