Update CHANGELOG

Author: BenGraterUnity

com.unity.postprocessing/CHANGELOG.md

@@ -11,7 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 - Remove support for PVRTC format in Unity 6.1 or newer
-- Fixed compute based effects not supported on some OpenGL platforms
+- Fixed compute based effects not supported on OpenGLES
 - Documentation updates
 
 ## [3.4.0] - 2023-12-11