wrong git-clone link

[David Nečas <yeti physics muni cz>]

Hi, the download page

    http://www.gtk.org/gtk-doc/download.html

shows wrong git clone command, i.e.

    git clone http://git.gnome.org/gtk-doc

instead of

    git clone git://git.gnome.org/gtk-doc

AFAICT git.gnome.org does not work over HTTP.

Yeti