Adding changeLog

Signed-off-by: Harsh Garg <gkharsh@amazon.com>

CHANGELOG.md

@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add successfulSearchShardIndices in searchRequestContext ([#15967](https://github.com/opensearch-project/OpenSearch/pull/15967))
 - Remove identity-related feature flagged code from the RestController ([#15430](https://github.com/opensearch-project/OpenSearch/pull/15430))
 - Add support for msearch API to pass search pipeline name - ([#15923](https://github.com/opensearch-project/OpenSearch/pull/15923))
+- Add _list/indices API as paginated alternate to _cat/indices ([#14718](https://github.com/opensearch-project/OpenSearch/pull/14718))
 
 ### Dependencies
 - Bump `com.azure:azure-identity` from 1.13.0 to 1.13.2 ([#15578](https://github.com/opensearch-project/OpenSearch/pull/15578))

server/src/main/java/org/opensearch/rest/action/list/AbstractListAction.java

@@ -21,7 +21,8 @@
 
 /**
  * Base Transport action class for _list API.
- *
+ * Serves as a base class for APIs wanting to support pagination.
+ * Existing _cat APIs can refer {@link org.opensearch.rest.action.cat.RestIndicesAction}.
  * @opensearch.api
  */
 public abstract class AbstractListAction extends AbstractCatAction {