Fixing API version (Azure#15651)

Co-authored-by: Miguel Concha Vazquez <miconcha@microsoft.com>

Author: wmbt96

specification/azsadmin/resource-manager/compute/Microsoft.Compute.Admin/stable/2020-11-01/examples/Features/List.json

@@ -2,7 +2,7 @@
   "parameters": {
     "subscriptionId": "20ff7fc3-e762-44dd-bd96-b71116dcdc23",
     "location": "local",
-    "api-version": "2021-01-01"
+    "api-version": "2020-11-01"
   },
   "responses": {
     "200": {