Add changelog entry for iPad mini naming fix

Co-authored-by: Zandor300 <6069593+Zandor300@users.noreply.github.com>

Author: Copilot

CHANGELOG.md

@@ -20,7 +20,8 @@
 
 ### Bug fixes
 
-- Fixed iPhone Air incorrectly marked as having ultra-wide camera. ([#463](https://github.com/devicekit/DeviceKit/pull/463))
+- Fixed iPhone Air incorrectly marked as having ultra-wide camera. ([#463](https://github.com/devicekit/DeviceKit/issues/463))
+- Fixed naming of iPad mini devices to match Apple's official naming (lowercase "mini"). ([#458](https://github.com/devicekit/DeviceKit/issues/458))
 - Exclude unhandled files (`Info.plist`, `Device.swift.gyb`) to suppress SPM warnings. ([#484](https://github.com/devicekit/DeviceKit/pull/484))
 
 ## Version 5.7.0