update

Author: mrbullwinkle

articles/ai-foundry/openai/how-to/dotnet-migration.md

@@ -7,7 +7,7 @@ ms.author: mbullwin
 ms.service: azure-ai-openai
 ms.custom: devx-track-dotnet
 ms.topic: how-to
-ms.date: 07/02/2025
+ms.date: 09/30/2025
 manager: nitinme
 ---