fix changelog

CHANGELOG.md

@@ -30,6 +30,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Added
 - Added reason field for registration when approval is required
+- Group staff members by role in the About page
 
 
 ## [2.2.3] - 2021-01-18