When calling "man lxc.container.conf", an internal "man" keyword is displayed :

$ man lxc.container.conf
[...]
lxc.mount.entry
              Specify a mount point corresponding to a line in the fstab format.  Moreover lxc supports mount  propagation,  such  as
              rslave  or  rprivate, and adds three additional mount options.  optional don't fail if mount does not work.  create=dir
              or create=file to create dir (or file) when the point will be mounted.  relative source path is taken to be relative to
              the mounted container root. For instance,

dev/null proc/kcore none bind,relative 0 0
              .fi     <-----------------------------------UNEXPECTED KEYWORD !!!!

The problem seems to come from the missing blanks before "dev/null proc/kcore none bind,relative 0 0"

Moreover, for homogeneity purposes, it is better to use the "programlisting" tag used in the rest of the text instead of  "screen".
Signed-off-by: Rachid Koucha <rachid.koucha@gmail.com>