Thanks, @itsbhanusharma, I did not know about that! 
Maybe it could say something like:
Contact URL for this site. Displayed on the /about page for urgent matters. If left blank, the email address from the
contact emailsetting will be used.
And then explain it at /wizard/steps/contact somehow…
@spamless if you’d like contact email to show, you can remove contact url; I tested it and that’s how it works.