man: fix formatting for alternative option

man: fix formatting for alternative option

This looked like...

    --server-poll-timeout n
        --connect-timeout n when connecting to [...]

... and this patch changes this to...

    --server-poll-timeout n, --connect-timeout n
        When connecting to [...]

... preserving correct highlighting.

Signed-off-by: Christian Hesse <mail@eworm.de>
Acked-by: David Sommerseth <davids@openvpn.net>
Message-Id: <20161228075420.348-1-list@eworm.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg13747.html
Signed-off-by: David Sommerseth <davids@openvpn.net>