Redirect old install article

Author: adegeo

.openpublishing.redirection.core.json

@@ -926,6 +926,10 @@
             "redirect_url": "/dotnet/core/deploying/index",
             "redirect_document_id": true
         },
+        {
+            "source_path_from_root": "/docs/core/deploying/github-copilot-app-modernization-install.md",
+            "redirect_url": "/dotnet/core/porting/github-copilot-app-modernization-overview"
+        },
         {
             "source_path_from_root": "/docs/core/preview3/tools/csproj.md",
             "redirect_url": "/dotnet/core/project-sdk/msbuild-props",