docs: Fix release date for 1.16.0

Author: JanEbbing

CHANGELOG.md

@@ -5,7 +5,7 @@ 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).
 
 
-## [1.16.0] - 2025-01-17
+## [1.16.0] - 2025-01-22
 ### Added
 * Added support for the Write API in the client library, the implementation
   can be found in the `DeepLClient` class. Please refer to the README for usage