Update modules/authentication/proc-enabling-user-authentication-with-microsoft-azure.adoc

Author: themr0c

modules/authentication/proc-enabling-user-authentication-with-microsoft-azure.adoc

@@ -34,6 +34,11 @@ Supported account types::
 Select *Accounts in this organizational directory only*.
 
 Redirect URI::
+
+Select a platform:::
+Select *Web*.
+
+URL:::
 Enter the backend authentication URI set in {product-short}: `pass:c,a,q[{my-product-url}/api/auth/microsoft/handler/frame]`
 
 Front-channel logout URL::