Yes,
I know, but for client validation we use HTML5 (safari not support), the input url HTML required http://
in the attached screenshot you may view the HTML5 validation from Chrome (the validation and message is not generated by Easy Profile or Joomla, but by Browser).

The only way to do this is to use the text field with custom format parameter for URL for edit/register profile and use delimenter text/HTL for profile page with our content plugin to generate the link (documentation at https://www.easy-profile.com/docs/26-plugin-content.html).
example of delimeter html:
<a href="{user alias_of _text_link}">{user alias_of _text_link}</a>

if you want check and auto add (if missing) http:// you can use our triggers (https://www.easy-profile.com/docs/44-triggers.html). But required PHP Knowledge.