Optimize change log

Signed-off-by: Binlong Gao <gbinlong@amazon.com>

Author: gaobinlong

CHANGELOG.md

@@ -88,7 +88,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix ClassCastException in FlightClientChannel for requests larger than 16KB ([#20010](https://github.com/opensearch-project/OpenSearch/pull/20010))
 - Fix GRPC Bulk ([#19937](https://github.com/opensearch-project/OpenSearch/pull/19937))
 - Fix node bootstrap error when enable stream transport and remote cluster state ([#19948](https://github.com/opensearch-project/OpenSearch/pull/19948))
-- Fix delete not using index template failed when the index template matches a data stream but has low priority ([#20102](https://github.com/opensearch-project/OpenSearch/pull/20102))
+- Fix deletion failure/error of unused index template; case when an index template matches a data stream but has a lower priority. ([#20102](https://github.com/opensearch-project/OpenSearch/pull/20102))
 
 ### Dependencies
 - Bump Apache Lucene from 10.3.1 to 10.3.2 ([#20026](https://github.com/opensearch-project/OpenSearch/pull/20026))