Examine source code of Remove target blank

{
  "manifest_version": 3,
  "name": "Remove target blank",
  "version": "1.0",
  "description": "Removes 'rel=\"noreferrer\"' and 'target=\"_blank\"' from all anchor tags on a page.",
  "icons": {
    "16": "images/16x16.png",
    "32": "images/32x32.png",
    "48": "images/48x48.png",
    "128": "images/128x128.png",
    "512": "images/512x512.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.argentina.gob.ar/*",
        "https://qa2-back.argentina.gob.ar/*"
      ],
      "js": [
        "./js/content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "host_permissions": [
    "https://www.argentina.gob.ar/*",
    "https://qa2-back.argentina.gob.ar/*"
  ],
  "permissions": [
    "clipboardWrite"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f015651b-c952-45b4-b699-1441eff88cb4}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "locationInfo"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  }
}