bug#74770: [shepherd-website] Two "//" as link behind head image

[Jonathan Brielmaier]

Hi,

there is a super tiny problem on the lovely and new shepherd website:

1. Go to https://www.gnu.org/software/shepherd/
2. Click on to big Shepherd logo on the top of the website
3. You end up at https://www.gnu.org/software/shepherd// <- notice the
additional "/" at the end of the url

The problem in the HTML code is here:
<a href="/software/shepherd//" class="logo">

Yet I did not found out yet where the problem in the haunt code is.

~Jonathan