Update ar.yml

Should work with no problems this time!

Fixed some issues:
-Removed %{count} from zero and replaced it with the word zero
-Added %{attribute} to confirmation

More accurate translations for:
inclusion, invalid, not_an_integer, record_invalid, taken, template header, quadrillion

added pluralization cases to:
too_long, too_short, wrong_length

Added missing translations:
restrict_dependent_destroy, present, other_than, format in percentage format

words_connector, last_word_connector, two_words_connector are all the same in Arabic