doc: Improve Japanese lxc.conf(5) to be easy to read

Change the location of linefeed for improving to be read lxc.conf(5) in
Japanese environment.

Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
lxc-debian: Add support for --release

Signed-off-by: Laurent Vallar <val@zbla.net>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
lxc-debian: Add --arch option

Signed-off-by: Laurent Vallar <val@zbla.net>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>