Prepare to release 2.2.4

Author: colinodell

CHANGELOG.md

@@ -6,6 +6,8 @@ Updates should follow the [Keep a CHANGELOG](https://keepachangelog.com/) princi
 
 ## [Unreleased][unreleased]
 
+## [2.2.4] - 2022-05-14
+
 ### Fixed
 
 - Fixed AutolinkExtension not ignoring trailing strikethrough syntax (#867)
@@ -438,7 +440,8 @@ No changes were introduced since the previous release.
     - Alternative 1: Use `CommonMarkConverter` or `GithubFlavoredMarkdownConverter` if you don't need to customize the environment
     - Alternative 2: Instantiate a new `Environment` and add the necessary extensions yourself
 
-[unreleased]: https://github.com/thephpleague/commonmark/compare/2.2.3...main
+[unreleased]: https://github.com/thephpleague/commonmark/compare/2.2.4...main
+[2.2.4]: https://github.com/thephpleague/commonmark/compare/2.2.3...2.2.4
 [2.2.3]: https://github.com/thephpleague/commonmark/compare/2.2.2...2.2.3
 [2.2.2]: https://github.com/thephpleague/commonmark/compare/2.2.1...2.2.2
 [2.2.1]: https://github.com/thephpleague/commonmark/compare/2.2.0...2.2.1