Batch of phrasing and typo fixes
Batch of phrasing and typo fixes

amitaibu/elm-lang.org,frankschmitt/elm-lang.org,jvoigtlaender/elm-lang.org,frankschmitt/elm-lang.org,FranklinChen/elm-lang.org,FranklinChen/elm-lang.org,amitaibu/elm-lang.org,jvoigtlaender/elm-lang.org