Update packages/pluggableWidgets/datagrid-web/CHANGELOG.md

Co-authored-by: Roman Vyakhirev <roman.vyakhirev@mendix.com>

Author: iobuhov

packages/pluggableWidgets/datagrid-web/CHANGELOG.md

@@ -18,7 +18,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - We improved virtual scrolling behavior when horizontal scrolling is present due to grid size.
 
-- We added screen reader support for a11y.
+- We improved screen reader support for selection feature.
 
 ### Added