man: doveadm-index.1: Added description for options -n and -q.
man: doveadm-index.1: Added description for options -n and -q.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot