Update relase date in changelog

Author: MarioBlazek

doc/CHANGELOG.md

@@ -7,7 +7,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
-## [2.1.0] - 29-01-2019
+## [2.1.0] - 02-01-2019
 ### Added
 - DownloadController by @darinda
 - Validation messages by @darinda