docs: Update changelog.

Author: drupol

CHANGELOG.md

@@ -5,11 +5,11 @@ All notable changes to this project will be documented in this file.
 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).
 
-## [Unreleased](https://github.com/ecphp/php-conventions/compare/0.0.1...HEAD)
+## [1.0.0](https://github.com/ecphp/php-conventions/compare/0.0.1...1.0.0)
 
 ### Commits
 
-- Initial set of files. [`7118751`](https://github.com/ecphp/php-conventions/commit/711875115bae02d98ed1d85567922b13f54eb385)
+- Initial set of files. [`c2abad3`](https://github.com/ecphp/php-conventions/commit/c2abad3363d529684e670e1ee3275e6548d54635)
 
 ## 0.0.1 - 2021-04-19