(Azure CXP) added note about application logging

Added note 'Application logging for blob storage can only use storage accounts in the same region as the App Service'
https://github.com/MicrosoftDocs/azure-docs/issues/52325

Author: Grace-MacJones-MSFT

articles/app-service/troubleshoot-diagnostic-logs.md

@@ -34,6 +34,9 @@ This article uses the [Azure portal](https://portal.azure.com) and Azure CLI to
 
 ## Enable application logging (Windows)
 
+> [!NOTE]
+> Application logging for blob storage can only use storage accounts in the same region as the App Service
+
 To enable application logging for Windows apps in the [Azure portal](https://portal.azure.com), navigate to your app and select **App Service logs**.
 
 Select **On** for either **Application Logging (Filesystem)** or **Application Logging (Blob)**, or both.