This file is indexed.

/usr/share/doc/ubuntu-online-tour/index.html is in ubuntu-online-tour 0.11-0ubuntu4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<html>
<head>
</head>

<body>
<script type="text/javascript">
    function redirectpage(dest){
      if (window.location.replace)
        window.location.replace(dest)
      else
        window.location=dest
    }

    var languageinfo=navigator.language ? navigator.language :
    navigator.userLanguage
    console.log(languageinfo.substr(0,2));
    if (languageinfo.substr(0,2)=="zh") {
      redirectpage("zh-CN/index.html");
	} 
    else {
      languages=new Array("ar", "az", "ca", "cs", "de", "el", "eo", "es", "fa", "fi", "fo", "fr", "gl", "gu", "he", "hu", "id", "it", "ja", "lt", "ms", "my", "nb", "nl", "pt", "ro", "ru", "sl", "sr", "sv", "te", "ub", "uk", "uz")
      var found=0
      for (var i=0; i<languages.length; i++) {
        if (languageinfo.substr(0,2)==languages[i]  ) {
          redirectpage(languages[i] + "/index.html");
          found=1
        }
      }
      if (found == 0) {
        redirectpage("en/index.html");
      }
    }
</script>
</body>
</html>