Added link

Author: phecke

powerapps-docs/developer/common-data-service/authentication.md

@@ -45,7 +45,7 @@ Office 365 authentication requires using the .NET Framework SDK assemblies with
 
 Using Office 365 authentication does not require that your register your applications as OAuth does. You must simply provide a User Principal Name (UPN) and password for a valid user.
 
-More information: [Authentication with .NET Framework applications](authenticate-dot-net-framework.md)
+More information: [Authentication with .NET Framework applications](authenticate-dot-net-framework.md), [Use of Office365 authentication with the WS-Trust security protocol](authenticate-office365-deprecation.md)
 
 ## All other software frameworks