Fix some typos, trim passive voice, tighten it up

The original content includes "either" as well, but it's style is awkward. This change proposes two things: (a) a comma after Transforms to clarify the intent, and (b) a re-ordering of words to decrease the use of passive voice and to come across less casual. Actually, I'm speculating about the comma as the original sentence is hard to understand for me, as a learner.