MAGETWO-33947: Story stabilization

- Fix typo

Author: Denys Rul

app/code/Magento/ConfigurableProduct/view/frontend/templates/product/view/type/options/configurable.phtml

@@ -30,9 +30,11 @@ $_attributes = $block->decorateArray($block->getAllowAttributes());
         </div>
     <?php endforeach; ?>
     <script type="text/x-magento-init">
-        "#product_addtocart_form": {
-            "configurable": {
-                "spConfig": <?php echo $block->getJsonConfig() ?>
+        {
+            "#product_addtocart_form": {
+                "configurable": {
+                    "spConfig": <?php echo $block->getJsonConfig() ?>
+                }
             }
         }
     </script>