Modify change log

Signed-off-by: yubonluo <yubonluo@amazon.com>

CHANGELOG.md

@@ -75,6 +75,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [Workspace] Add workspace list page ([#6182](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6182))
 - [Workspace] Add API to duplicate saved objects among workspaces ([#6288](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6288))
 - [Workspace] Add workspaces column to saved objects page ([#6225](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6225))
+- [Workspace] Add UI to duplicate saved objects among workspaces ([#6478](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6478))
 - [Multiple Datasource] Enhanced data source selector with default datasource shows as first choice ([#6293](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6293))
 - [Multiple Datasource] Add multi data source support to sample vega visualizations ([#6218](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6218))
 - [Multiple Datasource] Fetch data source title for DataSourceView when only id is provided ([#6315](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6315)