Update CHANGELOG.md

Author: jiahaoyu6666

CHANGELOG.md

@@ -3,7 +3,7 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.3.1] - 2023-2-23
+## [1.3.1] - 2023-1-23
 ### Added
 - Custom Chat Widget - Include Rich Messaging suppport
 - cloudformationTemplates - Include Rich Messaging suppport