docs: Update release-notes.md (#132)

Author: CCXLV

docs/release-notes.md

@@ -72,7 +72,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed license name in pyproject.toml ([#107](https://github.com/CCXLV/fluxqueue/pull/107))
 - Fixed pyproject classifiers ([#109](https://github.com/CCXLV/fluxqueue/pull/109))
 
-[Unreleased]: https://github.com/CCXLV/fluxqueue/compare/v0.3.0rc1...HEAD
-[0.3.0-rc1]: https://github.com/CCXLV/fluxqueue/compare/v0.2.1...v0.3.0rc1
+[0.3.0]: https://github.com/CCXLV/fluxqueue/compare/v0.2.1...HEAD
 [0.2.1]: https://github.com/CCXLV/fluxqueue/compare/v0.2.0...v0.2.1
 [0.2.0]: https://github.com/CCXLV/fluxqueue/compare/v0.2.0-beta.4...v0.2.0