fix changelog version

Author: joshraphael

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to the "rascript-language-server" extension will be document
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [[0.3.1](https://github.com/joshraphael/rascript-language-server/releases/tag/v0.4.0)] - 2025-09-18
+## [[0.4.0](https://github.com/joshraphael/rascript-language-server/releases/tag/v0.4.0)] - 2025-09-18
 
 [diff](https://github.com/joshraphael/rascript-language-server/compare/v0.3.0...v0.4.0)