Update auditactivityinitiator.md

Author: JarbasHorst

api-reference/beta/resources/auditactivityinitiator.md

@@ -11,9 +11,10 @@ ms.date: 03/27/2025
 # auditActivityInitiator resource type
 
 Namespace: microsoft.graph
-Identity the resource object that initiates the activity. The initiator can be a user, an app or a system (which is considered as an app)
 
+[!INCLUDE [beta-disclaimer](../../includes/beta-disclaimer.md)]
 
+Identity the resource object that initiates the activity. The initiator can be a user, an app or a system (which is considered as an app).
 
 ## Properties
 | Property	   | Type	|Description|