Improve ExtractorInterface phpdoc

src/Symfony/Component/Form/FormView.php

@@ -34,7 +34,7 @@ class FormView implements \ArrayAccess, \IteratorAggregate, \Countable
     /**
      * The child views.
      *
-     * @var FormView[]
+     * @var array<string, FormView>
      */
     public $children = [];
 

src/Symfony/Component/Translation/Extractor/ExtractorInterface.php

@@ -24,7 +24,7 @@ interface ExtractorInterface
     /**
      * Extracts translation messages from files, a file or a directory to the catalogue.
      *
-     * @param string|array $resource Files, a file or a directory
+     * @param string|string[] $resource Files, a file or a directory
      */
     public function extract($resource, MessageCatalogue $catalogue);