resolved conflicts in changelog

com.unity.render-pipelines.high-definition/CHANGELOG.md

 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [3.2.0-preview]
+
+### Fixed
+- Fix HDReflectionProbe offset displayed in gizmo different than what is affected.
+- Fix decals getting into a state where they could not be removed or disabled.
+
 ## [3.1.0-preview]
 
 ### Added