spec: Fix the escaping of special characters in Interfaces section

[Michael Hasselmann]

On Thu, 2012-02-16 at 15:40 +0200, Tiago Vignatti wrote:
> On 02/16/2012 01:42 PM, Michael Hasselmann wrote:
> > Hi,
> >
> > just noticed these small issues while going through the available
> > Wayland documentation.
> 
> FYI, this short-circuit with the idea of dynamically dump the interfaces 
> on the doc - check last commit there mainly:
> 
> http://cgit.freedesktop.org/~vignatti/wayland/log/?h=tex

Ah yes, makes of course more sense to generate that section, since the
information is already available.  And I see that you already included
the escaping for underscores, but not yet for ampersands (they will be
simply skipped, which makes the text a bit funny to read).

regards,
Michael