Fix language prelude link in recent boolean commit

src/types/boolean.md

@@ -10,7 +10,7 @@ two values, called *true* and *false*.
 Values of this type may be created using a [literal expression] using the
 keywords `true` and `false` corresponding to the value of the same name.
 
-This type is a [prelude item] with the [name] `bool`.
+This type is a part of the [language prelude] with the [name] `bool`.
 
 An object with the boolean type has a [size and alignment] of 1 each. The
 value false has the bit pattern `0x00` and the value true has the bit pattern
@@ -35,6 +35,7 @@ Like all primitives, the boolean type [implements][p-impl] the
 [enumerated type]: ./enum.md
 [expressions]: ../expressions.md
 [if expressions]: ../expressions/if-expr.md#if-expressions
+[language prelude]: ../names/preludes.md#language-prelude
 [lazy]: ../expressions/operator-expr.md#lazy-boolean-operators
 [literal expression]: ../expressions/literal-expr.md
 [name]: ../names.md
@@ -45,7 +46,6 @@ Like all primitives, the boolean type [implements][p-impl] the
 [p-sized]: ../special-types-and-traits.md#sized
 [p-sync]: ../special-types-and-traits.md#sync
 [p-traits]: ./items/traits.md
-[prelude item]: ../items/modules.md#prelude-items
 [size and alignment]: ../type-layout.md#size-and-alignment
 [std]: ../../std/primitive.bool.html
 [undefined behavior]: ../behavior-considered-undefined.md