Including Website to the Header of Cover Letter

I am writing a cover letter for my school and I am using this template that I found on the overleaf website.

https://www.overleaf.com/latex/templates/cover-letter-template-olin/qktfywzczhbd

In the header where it lists my name, address, phone and email, I would like to include my personal website. What is the function that would allow me to include it? Thank you.

% Your Information, please revise
name{FirstName}{LastName}
address{1 Brookings Dr}{St. Louis, MO 63130}
phone[mobile]{314-xxx-xxxx}                   
email{[email protected]}    

extrainfo{additional information}