Examine source code of Presto Ma Dose

{
  "manifest_version": 2,
  "name": "Presto Ma Dose",
  "version": "4.1.3",
  "description": "Prise de rendez-vous automatisée pour la vaccination COVID sur Doctolib",
  "icons": {
    "48": "img/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.doctolib.fr/*vaccination*"
      ],
      "js": [
        "dose_covid.js"
      ]
    }
  ]
}