Update library/alloc/src/collections/binary_heap.rs

Co-authored-by: Joshua Nelson <[email protected]>

Author: denisvasilik

library/alloc/src/collections/binary_heap.rs

@@ -1055,7 +1055,7 @@ impl<T> Drop for Hole<'_, T> {
 
 /// An iterator over the elements of a `BinaryHeap`.
 ///
-/// This `struct` is created by the [`iter`] method on [`BinaryHeap`]. See its
+/// This `struct` is created by [`BinaryHeap::iter()`]. See its
 /// documentation for more.
 ///
 /// [`iter`]: BinaryHeap::iter