Examine source code of CLIMATE CORRECTION

{
  "name": "CLIMATE CORRECTION",
  "description": "a climate word correction extension",
  "version": "1.0",
  "manifest_version": 2,
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "16": "earth-16.png"
  }
}