[Validator] fixed wrong php docs

Author: GuilhemN

src/Symfony/Component/Validator/Validation.php

@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Validator;
 
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+
 /**
  * Entry point for the Validator component.
  *

src/Symfony/Component/Validator/ValidatorBuilderInterface.php

@@ -15,6 +15,7 @@
 use Symfony\Component\Translation\TranslatorInterface;
 use Symfony\Component\Validator\Mapping\Cache\CacheInterface;
 use Symfony\Component\Validator\Mapping\Factory\MetadataFactoryInterface;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
 
 /**
  * A configurable builder for ValidatorInterface objects.