Fix to remove special character from N-NUMBER heading.
Fix to remove special character from N-NUMBER heading.

jprochazka/adsb-receiver,jprochazka/adsb-receiver,jprochazka/adsb-receiver,jprochazka/adsb-receiver,jprochazka/adsb-feeder,jprochazka/adsb-feeder,jprochazka/adsb-feeder,jprochazka/adsb-feeder,jprochazka/adsb-feeder,jprochazka/adsb-receiver