Fix documentation build

[Alexandre Julliard]

Vincent Béron <vberon at mecano.gme.usherb.ca> writes:

> Those errors are particularly bad as (in the past) it prevented the Wine
> documentation on winehq to be built for a release.
> 
> Alexandre, do you build the docs the same way you compile C files after
> applying a patch, or is it that your setup allows missing tags?

Yes, I always compile the docs, and they build fine on my setup. If
you know how to change my config to make it less forgiving I'd be
happy to do that.

-- 
Alexandre Julliard
julliard at winehq.org