Fix shorthand translation of "seconds"
Fix shorthand translation of "seconds"

"seconds" means "less than a minute". In Turkish, "sn" is the
abbreviation of "saniye", which means "second". So we should use
"dk" which is the abbreviation for "dakika" (minute).

rmm5t/jquery-timeago,rmm5t/jquery-timeago,rmm5t/jquery-timeago