add doc

Author: RyanHolstien

docs/how/updating-datahub.md

@@ -40,6 +40,7 @@ This file documents any backwards-incompatible changes in DataHub and assists pe
 - #12056: The DataHub Airflow plugin no longer supports Airflow 2.1 and Airflow 2.2.
 - #12056: The DataHub Airflow plugin now defaults to the v2 plugin implementation.
 - OpenAPI Update: PIT Keep Alive parameter added to scroll. NOTE: This parameter requires the `pointInTimeCreationEnabled` feature flag to be enabled and the `elasticSearch.implementation` configuration to be `elasticsearch`. This feature is not supported for OpenSearch at this time and the parameter will not be respected without both of these set.
+- OpenAPI Update 2: Previously there was an incorrectly marked parameter named `sort` on the generic list entities endpoint for v3. This parameter is deprecated and only supports a single string value while the documentation indicates it supports a list of strings. This documentation error has been fixed and the correct field, `sortCriteria`, is now documented which supports a list of strings. 
 
 ### Breaking Changes