[PATCH] man: Fix typo and use $() for make expressions

[David Herrmann]

Hi Thierry

On Fri, Jan 18, 2013 at 1:22 PM, Thierry Reding
<thierry.reding at avionic-design.de> wrote:
> Due to the typo, none of the .xml files would end up in the release
> tarball and cause make distcheck as well as builds from the tarball to
> fail.
>
> Using $() isn't strictly necessary but other variables and expressions
> use that variant already so it makes the usage consistent.

That's weird. "make distcheck" should not be able to build the
manpages if the XML files are not available. Also ${} is pretty
standard in makefiles, isn't it? I wonder what the problem here is. At
least distcheck runs fine on my machine.

Regards
David