Update CHANGELOG.md (#392)

Author: S-Dafarra

CHANGELOG.md

@@ -1,13 +1,5 @@
 # Changelog
-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]
-
-### Fixed
-- Fixed human model calibration bug in which sometimes it gets stuck (https://github.com/robotology/human-dynamics-estimation/pull/388).
+This file documents notable changes to this project done before November 2023. For changes after that date, please refer to the release notes of each release at https://github.com/robotology/human-dynamics-estimation/releases.
 
 ## [3.0.0] - 2023-11-09