docs: update contributors [skip ci]

Author: github-actions[bot]

README.md

@@ -373,6 +373,7 @@ dotnet pack src/CodingWithCalvin.VsixSdk.Templates/CodingWithCalvin.VsixSdk.Temp
 ## 👥 Contributors
 
 <!-- readme: contributors -start -->
+[![CalvinAllen](https://avatars.githubusercontent.com/u/41448698?v=4&s=64)](https://github.com/CalvinAllen) 
 <!-- readme: contributors -end -->
 
 ## 📄 License