[Azure SignalR Service]changes introduced by new version of Swashbuckle (#16906)

* [Azure SignalR Service]changes introduced by new version of Swashbuckle

* add back default value

* revert parameter orders

* Update settings.json

Author: juniwang

specification/signalr/resource-manager/Microsoft.SignalRService/stable/2021-10-01/examples/Operations_List.json

@@ -7,12 +7,12 @@
       "body": {
         "value": [
           {
-            "name": "Microsoft.SignalRService/WebPubSub/read",
+            "name": "Microsoft.SignalRService/SignalR/read",
             "isDataAction": false,
             "display": {
               "provider": "Microsoft.SignalRService",
-              "resource": "WebPubSub",
-              "operation": "Manage WebPubSub (read-only)",
+              "resource": "SignalR",
+              "operation": "Manage SignalR (read-only)",
               "description": "View the resource settings and configurations in the management portal or through API"
             },
             "properties": {}