Update ios-user-enrollment.md

Fixed acronym (AAD -> Azure AD)

Author: lenewsad

memdocs/intune/enrollment/ios-user-enrollment.md

@@ -56,7 +56,7 @@ For more information about the options available with User Enrollment, see [User
 
 An enrollment profile defines the settings applied to a group of devices during enrollment. 
 
-1. Federate your AAD instance with Apple Business Manager or Apple School Manager. For more information, see [Intro to federated authentication with Apple Business Manager](https://support.apple.com/en-euro/guide/apple-business-manager/welcome/web).
+1. Federate your Azure AD instance with Apple Business Manager or Apple School Manager. For more information, see [Intro to federated authentication with Apple Business Manager](https://support.apple.com/en-euro/guide/apple-business-manager/welcome/web).
 
 2. In the [Microsoft Endpoint Manager admin center](https://go.microsoft.com/fwlink/?linkid=2109431), choose **Devices** > **iOS/iPadOS** > **iOS enrollment** > **Enrollment types (preview)** > **Create profile** > **iOS/iPadOS**. This profile is where you'll indicate what enrollment experience your iOS/iPadOS and iPadOS end users will have on devices not enrolled through a corporate Apple method. If you'd like to make changes, you can edit this profile after you've created it.