Examine source code of Godot Docs Stable

{
  "manifest_version": 2,
  "name": "Godot Docs Stable",
  "version": "1.0",
  "description": "Makes sure that when you visit a Godot doc page, it goes to the docs of the stable version of Godot.",
  "icons": {
    "48": "icons/godot-docs-stable-48.png",
    "96": "icons/godot-docs-stable@2x.png"
  },
  "permissions": [
    "tabs",
    "webRequest",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.docs.godotengine.org/*"
      ],
      "js": []
    }
  ],
  "background": {
    "scripts": [
      "godot-docs-stable.js"
    ]
  }
}