magento/partners-magento2b2b#459: verify custom customer address attribute shows at checkout

- Fix missing closing brackets

Author: sagar1dahiwala

app/code/Magento/Customer/Test/Mftf/Test/StorefrontVerifyCustomCustomerAddressAttributeTest.xml

@@ -78,7 +78,7 @@
         <see selector="{{CheckoutShippingAddressSection.selectedShippingAddress}}" userInput="{{AttributeDropdownData.firstOption}}" stepKey="seeShippingAddressCustomAttribute"/>
 
         <!--Add Second Shipping Address-->
-        <actionGroup ref="StorefrontClickAddNewAddressButtonFromCheckoutShippingActionGroup" stepKey="clickAddNewAddressButton"
+        <actionGroup ref="StorefrontClickAddNewAddressButtonFromCheckoutShippingActionGroup" stepKey="clickAddNewAddressButton" />
 
         <!--Fill in Shipping Address required fields and Custom Customer Address Attribute and click *Ship Here* button-->
         <actionGroup ref="FillNewShippingAddressModalActionGroup" stepKey="changeAddress">