git: calendar(1): Add '-h' and '-?' to show usage help

[Aaron LI]

commit ec2ffd9d0928e1bd32a7d525e5df676b4f9318a6
Author: Aaron LI <aly at aaronly.me>
Date:   Wed Nov 6 22:19:59 2019 +0800

    calendar(1): Add '-h' and '-?' to show usage help

Summary of changes:
 usr.bin/calendar/calendar.1 | 5 ++++-
 usr.bin/calendar/calendar.c | 4 +++-
 2 files changed, 7 insertions(+), 2 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/ec2ffd9d0928e1bd32a7d525e5df676b4f9318a6


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