Ignoring your typo in the first sentence "wwww.", I know you meant "www."
I did test the link by pasting it to a /query window and then I clicked the link. It did not add "www." to the domain name, but rather it remained the same and loaded in Firefox correctly.
I recommend you try typing /remote off or unload all your installed mIRC scripts, then test this behavior again.
(obligatory pun: coon rapids response)
