fixed release data in changelog

Author: oscarotero

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [1.1.1] - Unreleased
+## [1.1.1] - 2021-01-18
 ### Fixed
 - Support for PHP 8 [#1]
 
@@ -21,5 +21,5 @@ First version
 
 [#1]: https://github.com/php-gettext/JS-Scanner/issues/1
 
-[1.1.1]: https://github.com/php-gettext/JS-Scanner/compare/v1.1.0...HEAD
+[1.1.1]: https://github.com/php-gettext/JS-Scanner/compare/v1.1.0...v1.1.1
 [1.1.0]: https://github.com/php-gettext/JS-Scanner/compare/v1.0.0...v1.1.0