docs(CHANGELOG): update CHANGELOG.md

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Changelog
 
+<!-- markdownlint-disable no-duplicate-header -->
+
 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/),
@@ -19,10 +21,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fix momentum tracing by [@XuehaiPan](https://github.com/XuehaiPan) in [#58](https://github.com/metaopt/TorchOpt/pull/58).
 - Fix CUDA build for accelerated OP [@XuehaiPan](https://github.com/XuehaiPan) in [#53](https://github.com/metaopt/TorchOpt/pull/53).
 - Fix gamma error in MAML-RL implementation [@Benjamin-eecs](https://github.com/Benjamin-eecs) [#47](https://github.com/metaopt/TorchOpt/pull/47).
 
-
 ### Removed
 
 ------