docs: update migration guide to relfect #2529

Author: EchoEllet

doc/migration/10_to_11.md

@@ -502,6 +502,9 @@ QuillEditorConfig(
 
 In the future, new features will be implemented with more caution to avoid possible issues.
 
+> [!NOTE]
+> **Update**: This feature has been added back in [11.3.0](https://github.com/singerdmx/flutter-quill/compare/v11.2.0...v11.3.0) ([#2529](https://github.com/singerdmx/flutter-quill/pull/2529/files#diff-3fd362bb7d8427c36545eac5cc1f18edc8137fbb866f1f52950b3a88823bc0d2R372-R378)) and is disabled by default.
+
 ## 🚧 Experimental
 
 APIs that were indicated as stable but are now updated to indicate