message: docs(aio): remove invalid nav item
  The `custom-elements` guide page was renamed to `elements` in
  That commit also added a new nav item for the renamed file, so this item is
  no longer valid.
  PR Close
diff: }
  ]
  },
  - {
  - "url": "guide/custom-elements",
  - "title": "Custom Elements",
  - "tooltip": "Using Angular Components as Custom Elements."
  - },
  {
  "title": "Service Workers",
  "tooltip": "Angular service workers: Controlling caching of application resources.",
  