Add IntoIterator intra doc link to various collections

Author: est31

Diff for: library/alloc/src/collections/binary_heap.rs

@@ -1259,9 +1259,10 @@ impl<T> FusedIterator for Iter<'_, T> {}
 /// An owning iterator over the elements of a `BinaryHeap`.
 ///
 /// This `struct` is created by [`BinaryHeap::into_iter()`]
-/// (provided by the `IntoIterator` trait). See its documentation for more.
+/// (provided by the [`IntoIterator`] trait). See its documentation for more.
 ///
 /// [`into_iter`]: BinaryHeap::into_iter
+/// [`IntoIterator`]: core::iter::IntoIterator
 #[stable(feature = "rust1", since = "1.0.0")]
 #[derive(Clone)]
 pub struct IntoIter<T> {

Diff for: library/alloc/src/collections/btree/map.rs

@@ -326,9 +326,10 @@ impl<K: fmt::Debug, V: fmt::Debug> fmt::Debug for IterMut<'_, K, V> {
 /// An owning iterator over the entries of a `BTreeMap`.
 ///
 /// This `struct` is created by the [`into_iter`] method on [`BTreeMap`]
-/// (provided by the `IntoIterator` trait). See its documentation for more.
+/// (provided by the [`IntoIterator`] trait). See its documentation for more.
 ///
 /// [`into_iter`]: IntoIterator::into_iter
+/// [`IntoIterator`]: core::iter::IntoIterator
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct IntoIter<K, V> {
     range: LazyLeafRange<marker::Dying, K, V>,

Diff for: library/alloc/src/collections/btree/set.rs

@@ -107,9 +107,10 @@ impl<T: fmt::Debug> fmt::Debug for Iter<'_, T> {
 /// An owning iterator over the items of a `BTreeSet`.
 ///
 /// This `struct` is created by the [`into_iter`] method on [`BTreeSet`]
-/// (provided by the `IntoIterator` trait). See its documentation for more.
+/// (provided by the [`IntoIterator`] trait). See its documentation for more.
 ///
 /// [`into_iter`]: BTreeSet#method.into_iter
+/// [`IntoIterator`]: core::iter::IntoIterator
 #[stable(feature = "rust1", since = "1.0.0")]
 #[derive(Debug)]
 pub struct IntoIter<T> {

Diff for: library/alloc/src/collections/linked_list.rs

@@ -124,9 +124,10 @@ impl<T: fmt::Debug> fmt::Debug for IterMut<'_, T> {
 /// An owning iterator over the elements of a `LinkedList`.
 ///
 /// This `struct` is created by the [`into_iter`] method on [`LinkedList`]
-/// (provided by the `IntoIterator` trait). See its documentation for more.
+/// (provided by the [`IntoIterator`] trait). See its documentation for more.
 ///
 /// [`into_iter`]: LinkedList::into_iter
+/// [`IntoIterator`]: core::iter::IntoIterator
 #[derive(Clone)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct IntoIter<T> {

Diff for: library/alloc/src/collections/vec_deque/into_iter.rs

@@ -8,9 +8,10 @@ use super::VecDeque;
 /// An owning iterator over the elements of a `VecDeque`.
 ///
 /// This `struct` is created by the [`into_iter`] method on [`VecDeque`]
-/// (provided by the `IntoIterator` trait). See its documentation for more.
+/// (provided by the [`IntoIterator`] trait). See its documentation for more.
 ///
 /// [`into_iter`]: VecDeque::into_iter
+/// [`IntoIterator`]: core::iter::IntoIterator
 #[derive(Clone)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct IntoIter<

Diff for: library/std/src/collections/hash/map.rs

@@ -1257,9 +1257,10 @@ impl<'a, K, V> IterMut<'a, K, V> {
 /// An owning iterator over the entries of a `HashMap`.
 ///
 /// This `struct` is created by the [`into_iter`] method on [`HashMap`]
-/// (provided by the `IntoIterator` trait). See its documentation for more.
+/// (provided by the [`IntoIterator`] trait). See its documentation for more.
 ///
 /// [`into_iter`]: IntoIterator::into_iter
+/// [`IntoIterator`]: crate::iter::IntoIterator
 ///
 /// # Example
 ///

Diff for: library/std/src/collections/hash/set.rs

@@ -1237,9 +1237,10 @@ pub struct Iter<'a, K: 'a> {
 /// An owning iterator over the items of a `HashSet`.
 ///
 /// This `struct` is created by the [`into_iter`] method on [`HashSet`]
-/// (provided by the `IntoIterator` trait). See its documentation for more.
+/// (provided by the [`IntoIterator`] trait). See its documentation for more.
 ///
 /// [`into_iter`]: IntoIterator::into_iter
+/// [`IntoIterator`]: crate::iter::IntoIterator
 ///
 /// # Examples
 ///