Copy/paste errors in docs of count and none_of combinators

[jgallagher]

count, none_of, and one_of all have the same document description:

Extract one token and succeeds if it is part of tokens.

which I assume is correct for one_of but not the other two. :) Additionally, the docs for count give an example of none_of:

let result = many(none_of("abc".chars()))
    .parse("edc");
assert_eq!(result, Ok((String::from("ed"), "c")));

[Marwes]

Fixed in 97e3a24, thanks for reporting!