Fix intra-rustdoc links

Author: SimonSapin

src/liballoc/boxed.rs

@@ -200,6 +200,8 @@ impl<T> Box<mem::MaybeUninit<T>> {
     /// Calling this when the content is not yet fully initialized
     /// causes immediate undefined behavior.
     ///
+    /// [`MaybeUninit::assume_init`]: ../../std/mem/union.MaybeUninit.html#method.assume_init
+    ///
     /// # Examples
     ///
     /// ```
@@ -234,6 +236,8 @@ impl<T> Box<[mem::MaybeUninit<T>]> {
     /// Calling this when the content is not yet fully initialized
     /// causes immediate undefined behavior.
     ///
+    /// [`MaybeUninit::assume_init`]: ../../std/mem/union.MaybeUninit.html#method.assume_init
+    ///
     /// # Examples
     ///
     /// ```

src/liballoc/rc.rs

@@ -471,6 +471,8 @@ impl<T> Rc<mem::MaybeUninit<T>> {
     /// Calling this when the content is not yet fully initialized
     /// causes immediate undefined behavior.
     ///
+    /// [`MaybeUninit::assume_init`]: ../../std/mem/union.MaybeUninit.html#method.assume_init
+    ///
     /// # Examples
     ///
     /// ```
@@ -513,6 +515,8 @@ impl<T> Rc<[mem::MaybeUninit<T>]> {
     /// Calling this when the content is not yet fully initialized
     /// causes immediate undefined behavior.
     ///
+    /// [`MaybeUninit::assume_init`]: ../../std/mem/union.MaybeUninit.html#method.assume_init
+    ///
     /// # Examples
     ///
     /// ```
@@ -745,7 +749,7 @@ impl<T: ?Sized> Rc<T> {
     ///
     /// # Safety
     ///
-    /// There must be no other `Rc` or [`Weak`][weak] pointers to the same value.
+    /// There must be no other `Rc` or [`Weak`] pointers to the same value.
     /// This is the case for example immediately after `Rc::new`.
     ///
     /// # Examples

src/liballoc/sync.rs

@@ -455,6 +455,8 @@ impl<T> Arc<mem::MaybeUninit<T>> {
     /// Calling this when the content is not yet fully initialized
     /// causes immediate undefined behavior.
     ///
+    /// [`MaybeUninit::assume_init`]: ../../std/mem/union.MaybeUninit.html#method.assume_init
+    ///
     /// # Examples
     ///
     /// ```
@@ -497,6 +499,8 @@ impl<T> Arc<[mem::MaybeUninit<T>]> {
     /// Calling this when the content is not yet fully initialized
     /// causes immediate undefined behavior.
     ///
+    /// [`MaybeUninit::assume_init`]: ../../std/mem/union.MaybeUninit.html#method.assume_init
+    ///
     /// # Examples
     ///
     /// ```
@@ -1130,7 +1134,7 @@ impl<T: ?Sized> Arc<T> {
     ///
     /// # Safety
     ///
-    /// There must be no other `Arc` or [`Weak`][weak] pointers to the same value.
+    /// There must be no other `Arc` or [`Weak`] pointers to the same value.
     /// This is the case for example immediately after `Rc::new`.
     ///
     /// # Examples