cal: add description about option -V to manpage

cal support option -V to display version information, but the manpage doesn't
mention it.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>

diff --git a/misc-utils/cal.1 b/misc-utils/cal.1
index 0f6af658cc07234ee6d77b047f4726902e456ebb..8ec44b047caaf3c4851ea2148b18cd1cb6743157 100644 (file)
--- a/misc-utils/cal.1
+++ b/misc-utils/cal.1
@@ -65,6 +65,8 @@ Display Monday as the first day of the week.
 Display Julian dates (days one-based, numbered from January 1).
 .It Fl y
 Display a calendar for the current year.
+.It Fl V
+Display version information and exit.
 .El
 .Pp
 A single parameter specifies the year (1 - 9999) to be displayed;