Update migration-api-whats-new.md

added link to the full details describing the new requirements in ExportSettings.xml.

Author: JoanneHendrickson

docs/apis/migration-api-whats-new.md

@@ -1,7 +1,7 @@
 ---
 title: "Migration API What's new"
 description: "Learn about the new features and updates to the Migration API."
-ms.date: 09/23/2022
+ms.date: 11/20/2022
 ms.reviewer: jhendr
 author: JoanneHendrickson
 ms.author: jhendr
@@ -20,21 +20,7 @@ Check here to see what features or updates have been added to the Migration API.
 
 Beginning January 1, 2023, the SourceType field will be mandatory when calling the Migration API. Starting October 1st, 2022, a warning message will be sent if the field is missing.
 
-**Accepted SourceType values:**
-
-- AmazonS3   
-- AzureStorage   
-- Box 
-- Dropbox   
-- Egnyte   
-- FileShare   
-- GoogleCloudStorage   
-- GoogleDrive   
-- MicrosoftStream   
-- OneDrive  
-- SharePointOnline   
-- SharePointOnPremServer    
-- Other
+To learn more, including examples, see: **[SharePoint Import Migration API - ExportSettings.xml](/sharepoint/dev/apis/migration-api-overview#exportsettingsxml)**
 
 ## Fixes