Fix spelling error in image_gallery.dox
Fix spelling error in image_gallery.dox

rcordovano/autopsy,wschaeferB/autopsy,APriestman/autopsy,APriestman/autopsy,dgrove727/autopsy,rcordovano/autopsy,dgrove727/autopsy,wschaeferB/autopsy,millmanorama/autopsy,esaunders/autopsy,rcordovano/autopsy,millmanorama/autopsy,millmanorama/autopsy,APriestman/autopsy,APriestman/autopsy,esaunders/autopsy,rcordovano/autopsy,esaunders/autopsy,APriestman/autopsy,wschaeferB/autopsy,narfindustries/autopsy,narfindustries/autopsy,rcordovano/autopsy,wschaeferB/autopsy,dgrove727/autopsy,millmanorama/autopsy,narfindustries/autopsy,APriestman/autopsy,rcordovano/autopsy,APriestman/autopsy,esaunders/autopsy,esaunders/autopsy,wschaeferB/autopsy