Can you point to some part of the text that needs editing? I don't think the English in the FAQ is bad written at all (as a non-native speaker myself). I agree the "non-technical" thing is a bit misleading though.
> Bitcoin is designed to be a faster, cheaper and a more secure currency
> Security is achieved by having every participant do the verification themselves using [an] open protocol based on well[-]known cryptography methods
> The original software source code is open and available [to] everyone for review and improvement.
> The reward is halved approximately every 4 years until [a] total of 21 million bitcoins are generated around year 2140. Currently more than 9 million of bitcoins are available already.
Also "bitcoin" is not consistently capitalized.
That stuff aside, it's also not very idiomatic. I'm not sure what the ideal audience is, but if it's, say, my 60-year-old mom who doesn't really understand browser tabs, I don't think it's going to reach them. It's good for me though, as a programmer who doesn't specialize in crypto or know much about currency theory (if that's a thing).