message: Add more accurate link for Google Realtime API. Close
diff: "dateClose": "2019-01-15",
  "dateOpen": "2013-03-19",
  "description": "Google Realtime API provided ways to synchronise resources between devices. It operated on files stored on Google Drive.",
  - "link":"",
  + "link":"https://developers.google.com/realtime/overview",
  "name": "Google Realtime API",
  "type": "service"
  }
  