Update Changelog.md

Author: dragon7307

Changelog.md

@@ -5,6 +5,12 @@ All notable changes to this project 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).
 
+## [1.3] - 2024-1-25
+
+### Changed 
+
+- documentation comments to better reflect the dotnet style (https://github.com/draconware-dev/SpanExtensions.Net/pull/8)
+
 ## [1.2.1] - 2024-1-25
 
 ### Fixed