Match formating of tutorial

docs/beginner/tutorial2-surface/README.md

@@ -231,7 +231,8 @@ pub async fn run() {
 
     let mut state = State::new(window).await;
 
-    event_loop.run(move |event, _, control_flow| match event {
+    event_loop.run(move |event, _, control_flow| {
+        match event {
             Event::WindowEvent {
                 ref event,
                 window_id,
@@ -249,6 +250,7 @@ pub async fn run() {
                 _ => {}
             },
             _ => {}
+        }
     });
 }
 ```