Consistent Misspelling: It's 'Pokemon', not 'Pokemons'

[kitsune7]

This isn't a huge deal but, being a big pokemon fan, I know that this bugged me throughout the entire tutorial. Pokemon is a word with no plural form. Similar to words like sheep, aircraft, and deer, the plural form of the word is the same as the singular form. It's never correct to say 'pokemons' just like it's never correct to say 'sheeps'.

I'd have submitted a PR for this, but there's a lot of images and code with the issue, not only text on the website.