docs: Fixed typo

[ci skip]

CHANGELOG.md

@@ -2,7 +2,7 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## Unrelease
+## Unreleased
 ### Added
 - **History**: History section to list all changes
 - **Localization**: All UI text elements are now localized