Misspelling

This poster hanging all over the Technion made me feel kinda sad. I know I am not that good in English. So when I saw 'new' word I didnt jumped to conclusions. I went to
Cambrige
and to
Oxford
and they didnt show anything..
So only explanation - those morons , promoting their HiTech company in Technion mispelled simple English. How you can make an error in so simple word as 'gonna'.
really morons....