Update CHANGELOG.md

Author: utarwyn

CHANGELOG.md

@@ -12,6 +12,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 -   [#30](https://github.com/green-code-initiative/ecoCode-javascript/issues/30) EC24: define the WHERE clause as a limiting keyword
 -   [ecoCode#185](https://github.com/green-code-initiative/ecoCode/issues/185) Add build number to manifest
 
+### Changed
+
+-  [#30](https://github.com/green-code-initiative/ecoCode-javascript/issues/30) Improve documentation and clean code taxonomy of all rules
+
 ### Fixed
 
 -   [#30](https://github.com/green-code-initiative/ecoCode-javascript/issues/30) Fix typo in EC12 rule