chore(localization): fix analyzer warning

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat_localizations/example/lib/main.dart

@@ -64,8 +64,7 @@ class MyApp extends StatelessWidget {
   final Channel channel;
 
   @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
+  Widget build(BuildContext context) => MaterialApp(
         theme: ThemeData.light(),
         darkTheme: ThemeData.dark(),
         // Add all the supported locales
@@ -87,7 +86,6 @@ class MyApp extends StatelessWidget {
         ),
       );
 }
-}
 
 /// A list of messages sent in the current channel.
 ///