fix: rename variable

lib/game/view/pinball_game_page.dart

@@ -117,9 +117,9 @@ class PinballGameLoadedView extends StatelessWidget {
     final isPlaying = context.select(
       (StartGameBloc bloc) => bloc.state.status == StartGameStatus.play,
     );
-    final widthInRatio = MediaQuery.of(context).size.height * 9 / 16;
+    final gameWidgetWidth = MediaQuery.of(context).size.height * 9 / 16;
     final screenWidth = MediaQuery.of(context).size.width;
-    final leftMargin = (screenWidth / 2) - (widthInRatio / 1.8);
+    final leftMargin = (screenWidth / 2) - (gameWidgetWidth / 1.8);
 
     return Stack(
       children: [