bug#12995: syntax in documentation of date

[Blabla Quentin]

hello, I am an user of Xubuntu, and in the documentation (manual page) 
of _date_, I've red a small syntax error in the details of 'output format':

if you write 'minute (00..59)' or 'hour (00..23)', I think you must 
write 'second (00..59)' instead of 'second (00..60)' too.

regards