chore: changelog missing heading

Author: wesleyboar

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [2.3.1] - 2023-03-09: Tab Activation Scroll Bug
 
+### Fixed
+
 - fix: do not move toggle far away e3089b9
 
 ## [2.3.0] - 2023-03-09: Tabs (Bootstrap Navs & PyMdown Extensions)