fix metadata

Author: TylerMSFT

docs/build/use-github-copilot-create-cpp-console-app.md

@@ -7,7 +7,7 @@ ms.collection: ce-skilling-ai-copilot
 ms.custom:
   - ai-assisted
   - copilot-scenario-highlight
-ms.update-cycle: "180 days"
+ms.update-cycle: 180-days
 ---
 
 # Use AI to create a C++ console application in Visual Studio