match_like_matches_macro: strip refs in suggestion

[matthiaskrgr]

fn main() {
    let x = Some(3);

    // original:
    let z = match &x {
        Some(3) => true,
        _ => false,
    };

    // current suggestion
    let y = matches!(&x, Some(3));
    // could be simplified to:
    let y = matches!(x, Some(3));
}

Suggested by @LingMan :)