return a resource from patch (#15754)

Co-authored-by: Geoffrey Troyer <geoffreymtroyer@gmail.com>

Author: getroyer

specification/notebooks/resource-manager/Microsoft.Notebooks/preview/2019-10-11-preview/examples/NBResourcePatch.json

@@ -10,7 +10,18 @@
     }
   },
   "responses": {
-    "200": {},
+    "200": {
+      "body": {
+        "id": "subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/testRP/providers/Microsoft.Notebooks/NotebookProxies/testResource",
+        "name": "testResource",
+        "type": "Microsoft.Notebooks/NotebookProxies",
+        "properties": {
+          "resourceId": "acc07b62291e4a4a800f71ff252e0654",
+          "hostname": "Azure Notebooks",
+          "publicNetworkAccess": "Enabled"
+        }
+      }
+    },
     "404": {}
   }
 }

specification/notebooks/resource-manager/Microsoft.Notebooks/preview/2019-10-11-preview/notebooks.json

@@ -249,7 +249,10 @@
         ],
         "responses": {
           "200": {
-            "description": "OK"
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/NotebookProxy"
+            }
           },
           "404": {
             "description": "NotFound"