Update export-amr-api.md (SharePoint#4479)

Content update.  Updated minimum CSOM version under requirements.

Author: JoanneHendrickson

docs/apis/export-amr-api.md

@@ -188,7 +188,7 @@ It returns the AES256CBC encryption key used to decrypt the message in azureMani
 ## Set up Guidelines
 The following provides high level guidelines for implementing the asynchronous metadata migration function. This documentation does not go into details on how to interact with SharePoint RESTful service. It is assumed that the ISV has prior knowledge and will be able to access the target website with proper permission. </br>,</br>For more information on how to access the Sharepoint website, refer to [Get to Know the SharePoint Rest Service](https://docs.microsoft.com/en-us/sharepoint/dev/sp-add-ins/get-to-know-the-sharepoint-rest-service).
 
-1. Install and update the latest Microsoft.SharePointOnline.CSOM version. The minimum version requirement is V16.1.8600 or later.
+1. Install and update the latest Microsoft.SharePointOnline.CSOM version. The minimum version requirement is V16.1.9119.1200 or later.
 2. ISVs figure out the folder, document library or files of interested to be query and issued with CreateSPAsyncReadJob function. 
 3. Once successfully created, query the job status using the *jobQueueUri*. It provides the job process status and any error logging. After job completion, parse the Manifest to retrieve the metadata.