Update relative link

Author: hellosnow

docs/core/porting/github-copilot-app-modernization-overview.md

@@ -168,5 +168,5 @@ The tool only collects data about project types, intent to upgrade, and upgrade
 ## Related content
 
 - [How to upgrade a .NET app with GitHub Copilot app modernization](how-to-upgrade-with-github-copilot.md)
-- [Quickstart to migrate a .NET Project]((../../azure/migration/appmod/quickstart.md))
+- [Quickstart to migrate a .NET Project](../../azure/migration/appmod/quickstart.md)
 - [GitHub Copilot app modernization FAQ](github-copilot-app-modernization-faq.yml)