docs(changelog): add PR link

Author: EchoEllet

CHANGELOG.md

@@ -12,7 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
-- Fixed `View.of(context)` calls throwing when used with the `screenshot` package.
+- Fixed `View.of(context)` calls throwing when used with the `screenshot` package [#2662](https://github.com/singerdmx/flutter-quill/pull/2662).
 
 ## [11.4.2] - 2025-07-22