docs: Update CHANGELOG

Author: BriannaDelgado

CHANGELOG.md

@@ -5,6 +5,9 @@ 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).
 
 ## [Unreleased]
+### Changed
+- Updated `testModelType()` to just check if the `model_type_used` is non-null if the `model_type` is specified in the request
+- Updated `testMixedDirectionText()` to add a missing `</p>` tag
 
 ## [1.14.0] - 2025-12-10
 ### Added