Format code (#59)

Author: wuwx

config/autoload/server.php

@@ -9,8 +9,8 @@
  * @contact  [email protected]
  * @license  https://github.com/hyperf/hyperf/blob/master/LICENSE
  */
-use Hyperf\Server\Server;
 use Hyperf\Server\Event;
+use Hyperf\Server\Server;
 use Swoole\Constant;
 
 return [