Add to deprecate section in CHANGELOG

Signed-off-by: Liyun Xiu <[email protected]>

CHANGELOG.md

@@ -14,7 +14,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix race condition while parsing derived fields from search definition ([14445](https://github.com/opensearch-project/OpenSearch/pull/14445))
 - Add allowlist setting for ingest-common and search-pipeline-common processors ([#14439](https://github.com/opensearch-project/OpenSearch/issues/14439))
 - Create SystemIndexRegistry with helper method matchesSystemIndex ([#14415](https://github.com/opensearch-project/OpenSearch/pull/14415))
-- Change default value of batch size parameter of bulk API to Integer.MAX_VALUE ([#14725](https://github.com/opensearch-project/OpenSearch/pull/14725))
 - Print reason why parent task was cancelled ([#14604](https://github.com/opensearch-project/OpenSearch/issues/14604))
 
 ### Dependencies
@@ -47,6 +46,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Allow system index warning in OpenSearchRestTestCase.refreshAllIndices ([#14635](https://github.com/opensearch-project/OpenSearch/pull/14635))
 
 ### Deprecated
+- Deprecate batch_size parameter on bulk API ([#14725](https://github.com/opensearch-project/OpenSearch/pull/14725))
 
 ### Removed