Fixing Codespaces deep link button

Author: paulyuk

README.md

@@ -20,7 +20,7 @@ This is a quickstart template to easily build and deploy a custom remote MCP ser
 
 If you're looking for this sample in more languages check out the [Node.js/TypeScript](https://github.com/Azure-Samples/remote-mcp-functions-typescript) and [Python](https://github.com/Azure-Samples/remote-mcp-functions-python) samples.  
 
-[![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://github.com/codespaces/new?hide_repo_select=true&ref=main&repo=836901178)
+[![Open in GitHub Codespaces](https://github.com/codespaces/badge.svg)](https://codespaces.new/Azure-Samples/remote-mcp-functions-dotnet)
 
 ## Prerequisites