chore: update changelog

Author: gjulivan

packages/pluggableWidgets/document-viewer-web/CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [1.0.0] - 2025-05-05
+
 ### Added
 
-- Initial widget implementation with PDF viewing capability.
+- Initial widget implementation with DOCX,PDF,XLSX,TXT, and Image viewing capability.