Gorila or Gorilla: How To spell?

The word Gorila is misspelled against Gorilla, a noun meaning "A large, arboreal, anthropoid ape of West Africa. It is larger than a man, and is remarkable for its massive skeleton and powerful muscles, which give it enormous strength. In some respects its anatomy, more than that of any other ape, except the chimpanzee, resembles that of man."