Rollup merge of rust-lang#44980 - steveklabnik:update-books, r=estebank

update books for next release

Also fixes some stdlib links to the reference which have changed.

First step in https://forge.rust-lang.org/release-process.html, doing it a few days early 😄

Author: kennytm

Diff for: src/doc/book

@@ -40,7 +40,7 @@
 /// [book]: ../../book/second-edition/ch15-02-deref.html
 /// [`DerefMut`]: trait.DerefMut.html
 /// [more]: #more-on-deref-coercion
-/// [ref-deref-op]: ../../reference/expressions.html#the-dereference-operator
+/// [ref-deref-op]: ../../reference/expressions/operator-expr.html#the-dereference-operator
 /// [ref-deref-trait]: ../../reference/the-deref-trait.html
 /// [type coercions]: ../../reference/type-coercions.html
 ///
@@ -127,7 +127,7 @@ impl<'a, T: ?Sized> Deref for &'a mut T {
 /// [book]: ../../book/second-edition/ch15-02-deref.html
 /// [`Deref`]: trait.Deref.html
 /// [more]: #more-on-deref-coercion
-/// [ref-deref-op]: ../../reference/expressions.html#the-dereference-operator
+/// [ref-deref-op]: ../../reference/expressions/operator-expr.html#the-dereference-operator
 /// [ref-deref-trait]: ../../reference/the-deref-trait.html
 /// [type coercions]: ../../reference/type-coercions.html
 ///

Diff for: src/doc/nomicon

@@ -150,7 +150,7 @@
 //! [`Sub`]: trait.Sub.html
 //! [`Mul`]: trait.Mul.html
 //! [`clone`]: ../clone/trait.Clone.html#tymethod.clone
-//! [operator precedence]: ../../reference/expressions.html#operator-precedence
+//! [operator precedence]: ../../reference/expressions/operator-expr.html#operator-precedence
 
 #![stable(feature = "rust1", since = "1.0.0")]