docs: Fixed man-page warnings discoverd by rpmlint

docs: Fixed man-page warnings discoverd by rpmlint

Running rpmlint against Fedora RPM packages revealed these warnings:

  W: manual-page-warning /usr/share/man/man8/openvpn.8.gz 2738:
     a special character is not allowed in a name
  W: manual-page-warning /usr/share/man/man8/openvpn.8.gz 2740:
     a special character is not allowed in a name

This is just a typo mistake in the .B formatting, missing a trailing
space.

Signed-off-by: David Sommerseth <davids@openvpn.net>
Acked-by: Steffan Karger <steffan.karger@fox-it.com>
Message-Id: <20170329094925.25644-1-davids@openvpn.net>
URL: http://www.mail-archive.com/search?l=mid&q=20170329094925.25644-1-davids@openvpn.net
Signed-off-by: David Sommerseth <davids@openvpn.net>