By default, Twitter Bootstrap's print styles include printing links.

/* Bootstrap's way of printing URLs */
@media print {
  a[href]:after {
    content: " (" attr(href) ")";
  }
}

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Read more Show archive.org snapshot

If you want to turn that off Show archive.org snapshot , you can do

/* Don't print link hrefs */
@media print {
  a[href]:after {
    content: none
  }
}