Wordsmith syslogd(8)

• Clarify -p/-S options by using appropriate subject-verb modifiers (verb and modifiers suggested that the subject should have been singular).
• Simplify/correct -a description:
  • Be more terse when describing IPv4 (the "usual dotted notation" isn't necessarily well understood by the reader). Being blunt and saying "IPv4 address" with an optional netmask is.
  • prefixlen is the appropriate terminology for IPv6.
  • mask/prefixlen is optional, not required (as noted later on in the section).
  • split up IPv4/IPv6 use so to clarify both forms.
  • Fix wordiness when describing the optional "service" specifier.
• -T: Use "cannot" instead of "can't" [*].

Bump .Dd for the changes.

MFC after: 1 month
Reported by: igor [*]
Reviewed by: hrs
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D9855