Set Changelog to ## Unreleased

Author: kitchen-porter

CHANGELOG.md

@@ -5,6 +5,8 @@ This file is used to list changes made in each version of the docker cookbook.
 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
+
 ## 10.0.0 - *2021-10-20*
 
 - Remove the sysvinit Docker Service managers