update CHANGELOG.md

Author: LouiseMsn

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed the missing minus signs in the `LogResidualCost` (https://github.com/Simple-Robotics/aligator/pull/382)
+
 ## [0.17.1] - 2025-12-01
 
 ## [0.17.0] - 2025-11-21