ENGCOM-1891: [Backport] Update webapi.xml to fix typo #15866

 - Merge Pull Request #15866 from dmytro-ch/magento2:2.1-develop-PR-port-15845
 - Merged commits:
   1. 228b765

Author: magento-engcom-team

app/code/Magento/Checkout/etc/webapi.xml

@@ -104,7 +104,7 @@
             <resource ref="anonymous" />
         </resources>
     </route>
-    <!-- Managing My shipping information -->
+    <!-- Managing My payment information -->
     <route url="/V1/carts/mine/set-payment-information" method="POST">
         <service class="Magento\Checkout\Api\PaymentInformationManagementInterface" method="savePaymentInformation"/>
         <resources>