Invalid URLS for links at the bottom of the page

[MrYossu]

Hello,

Just discovered your excellent set of templates. However, it looks like there's a problem with the three links at the bottom of the page. In the few I checked, they looked like this...

    <script src="//ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
    <script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.13.0/umd/popper.min.js"></script>
    <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>

...which are not valid URLs. If you add "https:" to them, the theme works fine.