Adds app proxy.

Author: kenwith

articles/active-directory/app-proxy/whats-new-docs.md

@@ -15,6 +15,13 @@ manager: karenhoran
 
 Welcome to what's new in Azure Active Directory application proxy documentation. This article lists new docs that have been added and those that have had significant updates in the last three months. To learn what's new with the service, see [What's new in Azure Active Directory](../fundamentals/whats-new.md).
 
+## January 2022
+
+### Updated articles
+
+- [Secure access to on-premises APIs with Azure Active Directory Application Proxy](application-proxy-secure-api-access.md)
+
+
 ## December 2021
 
 ### Updated articles