docs: update changelog

Author: ashenBlade

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to the "PostgreSQL Hacker Helper" 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).
 
+## [0.1.1]
+
+### Fix
+
+- Only valid pointer variables are expanded in Node variables view
+
 ## [0.1.0]
 
 ### Added