chore: minor adjustment to the CHANGELOG

Author: David Morcillo

CHANGELOG.md

@@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-## Changed
+## Added
 
 - `GetElectionLogEntries` now returns `chainedHash`
 - The `MessageParser` gets exported individually