fix documentation mark (#4)

Co-authored-by: Evgen <[email protected]>

README.md

@@ -28,14 +28,9 @@ create config `ecs.php`:
 declare(strict_types=1);
 
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
-use Symplify\EasyCodingStandard\ValueObject\Option;
 
 return static function(ContainerConfigurator $containerConfigurator): void {
-    $parameters = $containerConfigurator->parameters();
-
-    $parameters->set(Option::SETS, [
-        'vendor/umbrellio/code-style-php/umbrellio-cs.php'
-    ]);
+    $containerConfigurator->import(__DIR__ . '/vendor/umbrellio/code-style-php/umbrellio-cs.php');
 };
 ```