Update CHANGELOG.md for v1.0.1

Author: maxh213

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to string_editor will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.0.1] - 2025-01-20
+
+### Fixed
+- Fixed CHANGELOG.md to accurately reflect Gleam string_editor functions
+- Code formatting improvements
+
 ## [1.0.0] - 2025-01-20
 
 ### Added