ACQE-6193: added comment for guest checkout

Author: nikhilsharma-adobe

app/code/Magento/Checkout/Test/Mftf/Test/StorefrontGuestCheckoutTest/StoreFrontValidateDynamicChangeOfShippingRateForGuestUserTest.xml

@@ -55,7 +55,7 @@
                 <argument name="product" value="$createSimpleProduct$"/>
             </actionGroup>
             <actionGroup ref="OpenStoreFrontCheckoutShippingPageActionGroup" stepKey="goToShippingPage"/>
-            <!-- Guest checkout -->
+            <!-- Guest checkout for US address -->
             <actionGroup ref="FillGuestCheckoutShippingAddressFormActionGroup" stepKey="goToShippingAndFillDetails">
                 <argument name="customerAddress" value="US_Address_CA"/>
             </actionGroup>