Modify changelog

Signed-off-by: Gao Binlong <[email protected]>

Author: gaobinlong

CHANGELOG.md

@@ -8,7 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix for hasInitiatedFetching to fix allocation explain and manual reroute APIs (([#14972](https://github.com/opensearch-project/OpenSearch/pull/14972))
 - [Workload Management] Add queryGroupId to Task ([14708](https://github.com/opensearch-project/OpenSearch/pull/14708))
 - Add basic aggregation support for derived fields ([#14618](https://github.com/opensearch-project/OpenSearch/pull/14618))
-- Ingest pipeline supports modifying the op_type parameter of an indexing request
+- Ingest pipeline supports modifying the op_type parameter of an indexing request ([#15031](https://github.com/opensearch-project/OpenSearch/pull/15031))
 
 ### Dependencies
 - Bump `org.apache.commons:commons-lang3` from 3.14.0 to 3.15.0 ([#14861](https://github.com/opensearch-project/OpenSearch/pull/14861))