Update profile-batch-update.md (#1920)

Adding this as it is on the set property docs. not sure if it makes sense to include this as well:

[block:callout] { "type": "info", "body": "This API does not support gzip encoding." } [/block]

Co-authored-by: myronkaifung <[email protected]>

Author: mbocianski

reference/Ingestion API/user-profiles/profile-batch-update.md

@@ -6,3 +6,4 @@ hidden: false
 createdAt: "2020-10-20T00:41:26.254Z"
 updatedAt: "2023-09-26T21:06:38.914Z"
 ---
+[block:callout] { "type": "info", "body": "This API will return a 200 OK even if there are data validation issues. To ensure the request actually succeeded, you need to check the response body." } [/block]