Update workspace.json

Author: liuyu1981831m

specification/synapse/resource-manager/Microsoft.Synapse/preview/2019-06-01-preview/workspace.json

@@ -877,7 +877,7 @@
         "babylonConfiguration": {
           "description": "Babylon Configuration",
           "$ref": "#/definitions/BabylonConfiguration"
-        }
+        },
         "provisioningState": {
           "description": "Resource provisioning state",
           "type": "string",