fix changelog

Author: jcs090218

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to the "vscode-shader" extension will be documented in this
 
 Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
 
-## 0.2.1 (Unreleased)
+## 0.1.0 (Unreleased)
 > Released N/A
 
 - N/A