one more nit

Author: ruflin

CHANGELOG.md

@@ -4,7 +4,7 @@ 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).
 
-## [8.2](https://github.com/ruflin/Elastica/compare/8.2.0...8.x)
+## [Unreleased](https://github.com/ruflin/Elastica/compare/8.2.0...8.x)
 
 ### Backward Compatibility Breaks
 ### Added