docs: Revert changelog for testing

Author: richtea

CHANGELOG.md

@@ -5,10 +5,8 @@ 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/).
 
-## [0.0.1-alpha.0] - 2022-12-30
+## [Unreleased]
 
 ### Added
 
 - Initial version
-
-[0.0.1-alpha.0]: https://github.com/release-flow/keep-a-changelog-action-toolkit/releases/tag/v0.0.1-alpha.0