de.pl: mention technical detail regarding new not SYN packets
Since an appropriate translation of the firewall hits graph is not
possible due to limited space, mentioning "NewNotSYN" at least clarifies
the relationship between "Verworfene neue Pakete ohne SYN-Markierung
protokollieren" and "NewNotSYN".
Signed-off-by: Peter Müller <peter.mueller@ipfire.org> Reviewed-by: Michael Tremer <michael.tremer@ipfire.org> Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>