Update DataTablesExtension.php (#350)

Author: henderkes

src/DependencyInjection/DataTablesExtension.php

@@ -19,8 +19,8 @@
 use Omines\DataTablesBundle\Filter\AbstractFilter;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\Extension;
 use Symfony\Component\DependencyInjection\Loader;
-use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 
 /**
  * DataTablesExtension.