fix rpay merchant Id displayname

src/main/ui/static/payment/partner/templates/partner_detail.html

@@ -256,7 +256,7 @@
                         <a ui-sref=".product">Product</a>
                     </li>
                     <li ui-sref-active="active" ng-if="('10'|withRole) && partner.is_valid==1">
-                        <a ui-sref=".sub_merchant_applicaitons">Wechat Merchant Id Applicaitons</a>
+                        <a ui-sref=".sub_merchant_applicaitons">Merchant Id Applicaitons</a>
                     </li>
                     <li ui-sref-active="active" ng-if="partner.is_valid==1">
                         <a ui-sref=".permission_client">Permissions</a>