Update authentication-scenarios.md

Author: nokafor

articles/active-directory/develop/authentication-scenarios.md

@@ -17,7 +17,7 @@ ms.workload: identity
 ms.date: 10/15/2019
 ms.author: ryanwi
 ms.reviewer: jmprieur, saeeda, sureshja, hirsin
-ms.custom: aaddev, identityplatformtop40
+ms.custom: aaddev, identityplatformtop40, scenarios:getting-started
 #Customer intent: As an application developer, I want to understand the basic concepts of authentication in the Microsoft identity platform
 ms.collection: M365-identity-device-management
 ---