doc: Update Japanese lxc.container.conf(5)
doc: Update Japanese lxc.container.conf(5)

- Add the description that automount is ignored when cgroup namespaces
  are supported. Update for commit 4608594.
- Unify terminology of translation

Signed-off-by: KATOH Yasufumi <512423cb3a4857a38f472862b51e4ab1a1730f06@jazz.email.ne.jp>

QingweiPeterLan/cs188-lxc,hfuCN/lxc,aeris/lxc,cjwatson/lxc,federicobriata/lxc,cjwatson/lxc,tych0/lxc,hallyn/lxc,LynxChaus/lxc,caglar10ur/lxc,tych0/lxc,caglar10ur/lxc,hallyn/lxc,ss1h2a3tw/lxc,terceiro/lxc,federicobriata/lxc,ysbnim/lxc,thmo/lxc,aeris/lxc,akshaykarle/lxc,federicobriata/lxc,GreatFruitOmsk/lxc,thmo/lxc,hfuCN/lxc,hallyn/lxc,ss1h2a3tw/lxc,GreatFruitOmsk/lxc,QingweiPeterLan/cs188-lxc,akshaykarle/lxc,aeris/lxc,akshaykarle/lxc,tych0/lxc,cjwatson/lxc,hfuCN/lxc,ysbnim/lxc,thmo/lxc,ss1h2a3tw/lxc,GreatFruitOmsk/lxc,LynxChaus/lxc,QingweiPeterLan/cs188-lxc,LynxChaus/lxc,terceiro/lxc,terceiro/lxc,ysbnim/lxc,caglar10ur/lxc