chore: fix typo

frontend/app_flowy/lib/plugins/document/document.dart

@@ -39,7 +39,8 @@ class DocumentPluginBuilder extends PluginBuilder {
 
 class DocumentPlugin extends Plugin<int> {
   late PluginType _pluginType;
-  late final DocumentAppearanceCubit _documentAppearanceCubit;
+  final DocumentAppearanceCubit _documentAppearanceCubit =
+      DocumentAppearanceCubit();
 
   @override
   final ViewPluginNotifier notifier;
@@ -50,7 +51,7 @@ class DocumentPlugin extends Plugin<int> {
     Key? key,
   }) : notifier = ViewPluginNotifier(view: view) {
     _pluginType = pluginType;
-    _documentAppearanceCubit = DocumentAppearanceCubit();
+    _documentAppearanceCubit.fetch();
   }
 
   @override

frontend/app_flowy/lib/plugins/document/presentation/more/cubit/document_appearance_cubit.dart

@@ -20,9 +20,7 @@ class DocumentAppearance {
 }
 
 class DocumentAppearanceCubit extends Cubit<DocumentAppearance> {
-  DocumentAppearanceCubit() : super(const DocumentAppearance(fontSize: 14.0)) {
-    fetch();
-  }
+  DocumentAppearanceCubit() : super(const DocumentAppearance(fontSize: 14.0));
 
   late DocumentAppearance documentAppearance;
 

frontend/app_flowy/lib/plugins/document/presentation/share/share_button.dart

@@ -125,7 +125,6 @@ class ShareActionWrapper extends ActionCell {
 
   ShareActionWrapper(this.inner);
 
-  @override
   Widget? icon(Color iconColor) => null;
 
   @override