Update media-services-portal-get-started-with-aad.md

Pencil edit in line 50 as reported in the Acrolinx scorecard - "id" changed to "ID".

Author: PMEds28

articles/media-services/previous/media-services-portal-get-started-with-aad.md

@@ -47,7 +47,7 @@ Authenticates a service using an Azure Active Directory (Azure AD) app and secre
 
 ### Manage your Azure AD app and secret
 
-The **Manage your AAD app and secret** section lets you select or create a new Azure AD app and generate a secret. For security purposes, the secret cannot be shown after the blade is closed. The application uses the application id and secret for authentication to obtain a valid token for media services.
+The **Manage your AAD app and secret** section lets you select or create a new Azure AD app and generate a secret. For security purposes, the secret cannot be shown after the blade is closed. The application uses the application ID and secret for authentication to obtain a valid token for media services.
 
 Make sure that you have sufficient permissions to register an application with your Azure AD tenant and to assign the application to a role in your Azure subscription. For more information, see [Required permissions](https://docs.microsoft.com/azure/active-directory/develop/howto-create-service-principal-portal#required-permissions).