It is aloud to have the URL of your website portfolio in your profile description ?
This is what Fiverr Help says
WHAT URLS CAN I USE IN MY PROFILE OR GIG DESCRIPTION?
The following URLs may be used in your profile or Gig description:
Note: If you use a URL, which is not in the above list, it will be removed from your profile. If used in your Gig, it will be denied. Repetitive violations may cause an account to be restricted.