[Chore] Add changelog entry

Signed-off-by: Josh Romero <[email protected]>

CHANGELOG.md

@@ -11,7 +11,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### 📈 Features/Enhancements
 
 * [MD] Support legacy client for data source ([#2204](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2204))
-* [MD] Add data source signing support ([#2510](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2510)) 
+* [MD] Add data source signing support ([#2510](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2510))
 * [Plugin Helpers] Facilitate version changes ([#2398](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2398))
 * [MD] Display error toast for create index pattern with data source ([#2506](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2506))
 * [Multi DataSource] UX enhancement on index pattern management stack ([#2505](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2505))
@@ -38,6 +38,8 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### 🪛 Refactoring
 
+* Refactor and improve Discover field summaries ([#2391](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2391))
+
 ### 🔩 Tests
 
 ## [2.x]