message: docs: move "Browser Support" page in navigation tree
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diff: "title": "Router reference",
  "tooltip": "Describes highlight some core router API concepts."
  }
  -
  ]
  },
  {
  "title": "Roadmap",
  "tooltip": "Roadmap of the Angular team."
  },
  + {
  + "url": "guide/browser-support",
  + "title": "Browser Support",
  + "tooltip": "Browser support and polyfills guide."
  + },
  {
  "title": "Updating to Version 12",
  "tooltip": "Support for updating your application from version 11 to 12.",
  "title": "TypeScript Configuration",
  "tooltip": "TypeScript configuration for Angular developers."
  },
  - {
  - "url": "guide/browser-support",
  - "title": "Browser Support",
  - "tooltip": "Browser support and polyfills guide."
  - },
  {
  "url": "guide/strict-mode",
  "title": "Strict mode",
  