chore: update changelog

Author: gadomski

stapi-fastapi/CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## unreleased
+## Unreleased
 
 ### Fixed
 
@@ -15,6 +15,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 - Add constants for route names to be used in link href generation
 
+## Changed
+
+- Renamed all exceptions to errors ([#41](https://github.com/stapi-spec/pystapi/pull/41))
+
 ## [v0.6.0] - 2025-02-11
 
 ### Added