changelog: Improve entries

Author: jorisv

CHANGELOG.md

@@ -28,7 +28,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Remove pixi 0.57 warnings ([#2802](https://github.com/stack-of-tasks/pinocchio/pull/2802))
 - CMake: use `sdformat.cmake` from `jrl-cmakemodules` ([#2800](https://github.com/stack-of-tasks/pinocchio/pull/2800))
 - Fix doxygen document hierarchy ([#2811](https://github.com/stack-of-tasks/pinocchio/pull/2811))
-- Fix appendModel issue when a frame have non null transformation ([#2807](https://github.com/stack-of-tasks/pinocchio/pull/2807)
+- Fix `appendModel` issues ([#2807](https://github.com/stack-of-tasks/pinocchio/pull/2807)):
+  - Bad inertia transformation when multiple frame with inertia have non null placement
+  - Undefined behavior when more than two frame was attached to universe
 
 ### Removed
 - Remove CMake < 3.22 details ([#2790](https://github.com/stack-of-tasks/pinocchio/pull/2790))