docs: update changelog for version 1.0.0

Author: matzar

CHANGELOG.md

@@ -1,9 +1,13 @@
-# Change Log
+# Changelog
 
 All notable changes to the "hdl-lang" extension will be documented in this file.
 
 Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
 
+## 1.0.0
+
+- fix: DMux8way Body
+
 ## Release 0.0.1
 
 - Initial release