How to get rid of URLs in the text when printing?

The flamingo skin, which is based on bootstrap, has the feature that the printed version of pages displays the URL after every link contained in the text.

For example:

If you do not like this feature, you can get rid of it by using a StyleSheetExtension:

• Create a new page, i.e. somewhere in the "XWiki" space.
• Go into the object editor and add a XWiki.StyleSheetExtension
• In the "Code" text area add the following CSS code:
  @media print {
    a[href]:after {
      content: none
    }
  }
  
• Choose "On this wiki" from the "Use this extension" dropdown
• Save the changes