fixes issues reported by phpcs

Closes #3372733

Form/HiddenLanguageForm.php

@@ -2,14 +2,14 @@
 
 namespace Drupal\hidden_language\Form;
 
+use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Form\ConfigFormBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\hidden_language\HiddenLanguageManager;
-use Drupal\Core\Config\ConfigFactoryInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
- * Class HiddenLanguageForm.
+ * This class use for hidden language form.
  *
  * @package Drupal\hidden_language\Form
  */