No. If they put it in the FAQ it is fine.
I definitely agree that it will be preferable, if the misspelling is corrected in an errata in the FAQ, but there is unfortunately some precedence that card titles are not corrected. Here, I think of Myrcella Baratheon in AGOT LCG, which continues to be called Myrcella Lannister in upcoming versions. I know these are small errors, but is really nice when the 'facts' are correct.
This leads me to the question: Do you think the heroes' stats and abilities reflect the characters in the way they are portraited in other Warhammer sources??
For new Warhammer players it may also have been nice and colouristic to know who the heroes actually are!?! A line at the buttom of the cards should do it, e.g.: Johannes Broheim - Former champion of the Elector Count of Ostland or Thyrus Gormann - Magister Patriarch of the Bright Order and Former Supreme Patriarch.