Examine source code of Manu Auto Correct

{
  "name": "Manu Auto Correct",
  "version": "0.4",
  "manifest_version": 2,
  "description": "Bon alors déjà c'est M. Le Président",
  "icons": {
    "128": "icons/128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "js/correct.js"
      ]
    }
  ]
}