changelog: fix v2.2.0 version compare
@@ -430,7 +430,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
[#1]: https://github.com/baresip/re/pull/1
[Unreleased]: https://github.com/baresip/re/compare/v2.2.0...HEAD
-[v2.2.0]: https://github.com/baresip/re/compare/v2.2.0...v2.1.1
+[v2.2.0]: https://github.com/baresip/re/compare/v2.1.1...v2.2.0
[v2.1.1]: https://github.com/baresip/re/compare/v2.1.0...v2.1.1
[v2.1.0]: https://github.com/baresip/re/compare/v2.0.1...v2.1.0
[v2.0.1]: https://github.com/baresip/re/compare/v2.0.0...v2.0.1
