Fixed typo in `sorted_unstable_by` docs
@@ -2219,7 +2219,7 @@ pub trait Itertools : Iterator {
/// Sort all iterator elements into a new iterator in ascending order.
///
/// **Note:** This consumes the entire iterator, uses the
- /// `slice::sort__unstable_by()` method and returns the result as a new
+ /// `slice::sort_unstable_by()` method and returns the result as a new
/// iterator that owns its elements.
///
/// The sorted iterator, if directly collected to a `Vec`, is converted
