docs: update contributors

Author: github-actions[bot]

README.md

@@ -110,7 +110,7 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 ## 👥 Contributors
 
 <!-- readme: contributors -start -->
-<a href="https://github.com/CalvinAllen"><img src="https://avatars.githubusercontent.com/u/41448698?v=4&s=64" width="64" height="64" alt="CalvinAllen"></a> 
+<a href="https://github.com/CalvinAllen"><img src="https://avatars.githubusercontent.com/u/41448698?v=4&s=64" width="64" height="64" alt="CalvinAllen"></a> <a href="https://github.com/timheuer"><img src="https://avatars.githubusercontent.com/u/4821?v=4&s=64" width="64" height="64" alt="timheuer"></a> 
 <!-- readme: contributors -end -->
 
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