/// The index ranges returned by this trait are not required
/// to exactly match those of the forward search in reverse.
///
-/// For the reason why this trait is marked unsafe, see them
+/// For the reason why this trait is marked unsafe, see the
/// parent trait [`Searcher`].
pub unsafe trait ReverseSearcher<'a>: Searcher<'a> {
/// Performs the next search step starting from the back.