Typo in docs

[Ian Lynagh]

On Tue, Jun 12, 2012 at 11:07:35PM +0200, Gabor Greif wrote:
> forkIOWIthUnmask -> forkIOWithUnmask
> 
> in http://www.haskell.org/ghc/docs/latest/html/libraries/base/Control-Concurrent.html

Ta, fixed.


Thanks
Ian