Update article to match guidelines

Added formatting to match Microsoft guidelines for their documentation.

Author: Cmohan

articles/static-web-apps/publish-devops.md

@@ -29,7 +29,7 @@ In this tutorial, you learn to:
 ## Create a static web app in an Azure DevOps
 
   > [!NOTE]
-  > If you have an existing app in your repository, you may skip to the next section. The existing app must target .NET Core 3.1 for the pipeline to publish the app correctly.
+  > If you have an existing app in your repository, you may skip to the next section. NOTE: The existing app must target .NET Core 3.1 for the pipeline to publish the app correctly.
 
 1. Navigate to your repository in Azure Repos.