* add missing space between option and the argument
* mark argument as optional
* fix English
* obey 80 columns width

Was:
  -x|--ext-unix-skinode,..      allow external unix connections (optionally can be assign socket's inode that allows one-sided dump)

Now:
  -x|--ext-unix-sk [inode,...]
                        allow external unix connections (optional arguments
                        are socketpair inode(s) that allow one-sided dump)
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>