Correct the documentation for create_doc privilege

x-pack/docs/en/security/authorization/privileges.asciidoc

@@ -171,10 +171,7 @@ Privilege to index documents. Also grants access to the update mapping action.
 However, it does not enable a user to update existing documents.
 +
 --
-NOTE: When indexing documents with an external `_id` either via the index API or
-the bulk API, the request must use `op_type` as `create`. If `_id`s are
-generated automatically, the authorization happens as if the `op_type` is set to
-`create`.
+NOTE: This privilege requires the `op_type` as `create` on the Index or Bulk API.
 
 --