Update quickstart-resource-manager.md

- Change the default SKU to 'standard` in the example to reduce unnecessary failures as there is a limitation on the free SKU.
- Change to use the GA'ed API version (instead of preview) in the example

Author: zhenlan

articles/azure-app-configuration/quickstart-resource-manager.md

@@ -82,7 +82,7 @@ Before you can apply key-values to the VM, you must have an existing Azure App C
       },
       "skuName": {
         "type": "string",
-        "defaultValue": "free",
+        "defaultValue": "standard",
         "metadata": {
           "description": "Specifies the SKU of the app configuration store."
         }
@@ -329,15 +329,15 @@ Now that you've added key-values to the store, you're ready to deploy a VM using
                     "imageReference": {
                         "publisher": "MicrosoftWindowsServer",
                         "offer": "WindowsServer",
-                        "sku": "[listKeyValue(variables('appConfigRef'), '2019-02-01-preview', variables('windowsOSVersionParameters')).value]",
+                        "sku": "[listKeyValue(variables('appConfigRef'), '2019-10-01', variables('windowsOSVersionParameters')).value]",
                         "version": "latest"
                     },
                     "osDisk": {
                         "createOption": "FromImage"
                     },
                     "dataDisks": [
                         {
-                            "diskSizeGB": "[listKeyValue(variables('appConfigRef'), '2019-02-01-preview', variables('diskSizeGBParameters')).value]",
+                            "diskSizeGB": "[listKeyValue(variables('appConfigRef'), '2019-10-01', variables('diskSizeGBParameters')).value]",
                             "lun": 0,
                             "createOption": "Empty"
                         }