MAGETWO-43788: [GITHUB] Weight units are hardcoded to LBS #1702

- add phpdoc annotation

Author: Michail Slabko

app/code/Magento/Catalog/Block/Adminhtml/Product/Helper/Form/Weight.php

@@ -34,6 +34,7 @@ class Weight extends \Magento\Framework\Data\Form\Element\Text
      * @param \Magento\Framework\Data\Form\Element\CollectionFactory $factoryCollection
      * @param \Magento\Framework\Escaper $escaper
      * @param \Magento\Framework\Locale\Format $localeFormat
+     * @param \Magento\Directory\Helper\Data $directoryHelper
      * @param array $data
      */
     public function __construct(