The Logo and Cover Image fields allow you to specify art assets to use on each page of your blog:
An HTML link to an image hosting service. For example gravatar, for your avatar.
A link to an image committed to the
/images directory of your blog repository.
|The format you specify in these fields is important for repository-hosted images.|
You must use the pattern
/images/<filename> so the static site generator can create the image paths to each sub-page of your blog.
Failing to specify the leading forward-slash will mean the absolute path generated in the HTML pages will break. You’ll know this has happened when Page 2 of your blog onwards does not have any cover or logo images.