Hey,
The problem is not your command - I tested it locally and it works fine.
I think the problem is that the Parrot VM for the challenge blocks outgoing HTTP requests to all domains except www.github.com - if you look at the optional challenge included in the section it only asks you to try to install a package from www.github.com. You can test this by trying to wget any other site - wget www.google.com, wget www.nhl.com, everything fails except www.github.com
Basically, you’re doing everything right, but the machine isn’t set up to do anything except github stuff.