Correct two typos

Signed-off-by: Yannick Stade <[email protected]>

Author: ystade

CHANGELOG.md

@@ -11,7 +11,7 @@ This project adheres to [Semantic Versioning], with the exception that minor rel
 
 ### Fixed
 
-- 🐛 Deactivate PDF export in the documentation build ([#624]) ([**@ystade**])
+- 🐛 Deactivate PDF export in the documentation build ([#659]) ([**@ystade**])
 
 ## [3.1.0] - 2025-05-26
 

UPGRADING.md

@@ -44,5 +44,5 @@ Alternatively, CMake can be conveniently installed from PyPI using the [`cmake`]
 
 [MQT SyReC]: https://github.com/cda-tum/mqt-syrec
 [unreleased]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.1.1...HEAD
-[3.1.0]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.0.0...v3.1.1
+[3.1.1]: https://github.com/munich-quantum-toolkit/qmap/compare/v3.0.0...v3.1.1
 [3.0.0]: https://github.com/munich-quantum-toolkit/qmap/compare/v2.8.0...v3.0.0