docs "not found" on GHC page

[Serge D. Mechveliani]

I go by brouser to  www.haskell.org/ghc,  click at  `Documentation', 
at  `HTML.tar.gz'  on

    The User's Guide
    ...
    Download: | HTML.tar.gz | PDF | A4 Postscript (gzipped) | 

And it responds

  The requested URL /ghc/docs/latest/users_guide.html.tar.gz 
  was not found on this server.

Is this a bug on the GHC page?

-----------------
Serge Mechveliani
mechvel at botik.ru