Azure AD B2C end of sale docs update in azure-docs-pr - p1 #300077

Author: kengaderdus

articles/active-directory-b2c/index-desktop.yml

@@ -2,6 +2,7 @@
 
 title: Azure AD B2C desktop app authentication documentation
 summary: >
+  [!INCLUDE [active-directory-b2c-end-of-sale-notice-b](../../includes/active-directory-b2c-end-of-sale-notice-b.md)]
   Learn how to sign in users and access web APIs in your desktop application using our how-to guides.
 
 metadata: