I thought it was Normal. Shows up as Fighting in the Move Learned for Generation 1 Pokemon.
Karate Chop was a Normal type move in gen I, but it still shows up as a fighting type under "moves learned in generation I", and so do all the moves the got changed throughout the generations. (It shows the current gen's info on the move)
Example: http://pokemondb.net/pokedex/pichu/moves/2 See how Charm and Sweet Kiss are Fairy type moves?
So yes, it was a Normal type move but this isnt an error on the site. Thanks for reporting though ;)