* gnu/packages/guile-xyz.scm (g-golf): Update to 0.1.0-822.84e894e.
This also fixes the version to the correct one which is 0.1.0. Technically
g-golf does not actually have a release yet. The author of g-golf confirmed
versions will start at 0.1.0 as autotools currently has that version.
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>