How do I make a google extension automatically inject js into the page in question

My current manifest is

  "content_scripts": [
    {
        "matches": ["*://*.*/*"],
        "js": ["script.js"]
    }
  ],

in this case, the error Invalid value for 'content_scripts[0].matches[0]': Invalid host wildcard occurs when I refresh the extension. is there a better way to do this