add description

Author: datr93

specification/desktopvirtualization/resource-manager/Microsoft.DesktopVirtualization/preview/2021-09-03-preview/desktopvirtualization.json

@@ -2924,6 +2924,7 @@
   },
   "definitions": {
     "CloudError": {
+      "description": "Cloud error object.",
       "type": "object",
       "x-ms-external": true,
       "properties": {
@@ -2933,6 +2934,7 @@
       }
     },
     "CloudErrorProperties": {
+      "description": "Cloud error object properties.",
       "type": "object",
       "properties": {
         "code": {