Add PythonPDEVS attribution to readme

README.md

@@ -82,6 +82,6 @@ This project is licensed under the [Apache License 2.0](LICENSE).
 It includes third-party resources licensed under:
 - [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) (Font Awesome Free)
 - [MIT License](https://opensource.org/licenses/MIT) (Bootstrap Icons)
-- [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0) (included simulation component)
+- [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0) (PythonPDEVS)
 
 See [NOTICE.txt](NOTICE.txt) for attribution.