Yes it's wrong. It was an error in an early version of that BoL page. The current up to date SQL 2008 BoL page (Moving System Databases) states that it cannot be moved.
Tom, that's kinda' rough. Setting my help to Try Online First yields the statement that says you can move Resource DB but it's not advisable. I had to go out to MSDN online specifically to see the page you're referring to. Either my help is messed up or the builtin viewer is only 99% trustworthy.
I think I want my 1 point credit like the other guy 🙂
Ken