update changelog

Author: RobinMalfait

CHANGELOG.md

@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- Nothing yet!
+### Fixed
+
+- Support installing with stable versions of Tailwind CSS v4 ([#424](https://github.com/tailwindlabs/tailwindcss-typography/pull/424))
 
 ## [0.5.19] - 2025-09-24