Seems someone hacked that website, this is one of the headers:

  Location: https://www.youtube.com/watch?v=dQw4w9WgXcQ#sup_Charge,_got_a_bug_bounty?_cuz_I_just_found_an_earworm_in_your_site

I think Charge meant to use it to show you what happens when you visit an unregistered domain.

This being the Internet, someone registered it and pointed it at Rick Astley.