MAGETWO-44773: [Product Video] Delete video button has title "Delete Image"

Author: Oleksandr Karpenko

app/code/Magento/ProductVideo/view/adminhtml/templates/helper/gallery.phtml

@@ -116,8 +116,8 @@ $elementName = $block->getElement()->getName() . '[images]';
                 <button type="button"
                         class="action-delete"
                         data-role="delete-button"
-                        title="<?php /* @escapeNotVerified */ echo __('Delete image') ?>">
-                    <span> <?php /* @escapeNotVerified */ echo __('Delete image') ?></span >
+                        title="<?php /* @escapeNotVerified */ echo __('Delete video') ?>">
+                    <span> <?php /* @escapeNotVerified */ echo __('Delete video') ?></span >
                 </button>
                 <button type="button"
                         class="action-make-base"