Update testing notes

In #6065, for Cart only Order Summary Heading & Coupon form can
be removed, and for Checkout only the Coupon form.

docs/testing/releases/740.md

@@ -63,7 +63,7 @@ Zip file for testing: [woocommerce-gutenberg-products-block.zip](https://github.
     | Cart | Checkout |
     | --------------- | --------------- |
     |  Heading, Subtotal, Cart Items, Fees, Coupon Form, Shipping, Taxes | Subtotal, Cart Items, Fees, Coupon Form, Shipping, Taxes |
-4. Try to remove or move some of the inner blocks and save.
+4. Try to move some of the inner blocks and save. Confirm that in the Cart block only Order Summary Heading and the Coupon form inner blocks can be removed, and for the Checkout block only the Coupon form.
 5. Check on the website that your changes are reflected. Note that Taxes, Fees and Coupons will appear on the website only if the shop supports them.
 6. For the Cart > Shipping inner block make sure you can enable disable the shipping calculator and that the change is visibile in the website
 7. Enable Taxes on your website (`/wp-admin/admin.php?page=wc-settings`) by clicking  `Enable tax rates and calculations`