Fix code styling

echo.php

@@ -6,16 +6,15 @@
 use Laravel\Reverb\WebSockets\WsConnection;
 use Psr\Http\Message\RequestInterface;
 use React\EventLoop\Loop;
-use React\Http\HttpServer;
 use React\Socket\SocketServer;
 use Symfony\Component\Routing\Matcher\UrlMatcher;
 use Symfony\Component\Routing\RequestContext;
 use Symfony\Component\Routing\RouteCollection;
 
-require __DIR__ . '/vendor/autoload.php';
+require __DIR__.'/vendor/autoload.php';
 
 $loop = Loop::get();
-$socket = new SocketServer("0.0.0.0:8080", [], $loop);
+$socket = new SocketServer('0.0.0.0:8080', [], $loop);
 $router = new Router(new UrlMatcher(routes(), new RequestContext));
 
 $server = new Server($socket, $router, $loop);
@@ -28,7 +27,7 @@ function routes()
 {
     $routes = new RouteCollection;
     $routes->add(
-        'sockets', 
+        'sockets',
         Route::get('/', function (RequestInterface $request, WsConnection $connection) {
             $connection->onMessage(function ($message) use ($connection) {
                 $connection->send($message);
@@ -38,4 +37,4 @@ function routes()
     );
 
     return $routes;
-}
+}