Wrong example codes for single_match and single_match_else (`->` is used instead of `=>`)

[lo48576]

I found the doc is wrong (https://github.com/Manishearth/rust-clippy/blob/5f09020e90b485481fde984cc2e31c0112ebf1f1/clippy_lints/src/matches.rs#L25 , https://github.com/Manishearth/rust-clippy/blob/5f09020e90b485481fde984cc2e31c0112ebf1f1/clippy_lints/src/matches.rs#L46 , https://github.com/l1048576/rust-clippy/blob/a878916ad54eba5e92a3e6f0906e5099b26815d1/src/matches.rs#L23 , etc...).
The examples are as follows:

match x {
    Some(ref foo) -> bar(foo),
    _ => bar(other_ref),
}

but it is wrong because the former arms should be Some(ref foo) => bar(foo).

I tried to write pull request, but there are so many branches and I don't know which branch to fix.

[mcarton]

Thanks for reporting that. If you want, you can make a PR against the master branch.
I've also removed some old branches 😄