One of the examples used to say “this leads to a possibly confusing situation,
where the type of the closure is a double reference” while _actually_ referring to
the type of the closure _argument_.
///
/// Because the closure passed to `skip_while()` takes a reference, and many
/// iterators iterate over references, this leads to a possibly confusing
- /// situation, where the type of the closure is a double reference:
+ /// situation, where the type of the closure argument is a double reference:
///
/// ```
/// let a = [-1, 0, 1];