Updated the changelog.

Author: sgiavasis

CHANGELOG.md

@@ -14,6 +14,11 @@ 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/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## unreleased
+
+### Changed
+- Changed the 1mm atlases chosen in the rbc-options preconfig to the 2mm versions
+
 ## [v1.8.4] - 2022-06-27
 
 ### Added