changelog fix

Author: willmcgugan

CHANGELOG.md

@@ -5,20 +5,20 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## 2.0.2 - 2025-02-16
+## [2.0.2] - 2025-02-16
 
 ### Fixed
 
 - Fixed OptionList.add_options exhausting iterator https://github.com/Textualize/textual/pull/5540
 - Fixed screen not refreshing after pop https://github.com/Textualize/textual/pull/5543
 
-## 2.0.1 - 2025-02-16
+## [2.0.1] - 2025-02-16
 
 ### Fixed
 
 - Fixed escape tags in Content markup https://github.com/Textualize/textual/pull/5536
 
-## 2.0.0 - 2025-02-16
+## [2.0.0] - 2025-02-16
 
 ### Added