Temp Commit: Fix broken links pending rust-lang#1618

Author: chorman0773

src/type-layout.md

@@ -746,3 +746,6 @@ used with any other representation.
 [structs]: items/structs.md
 [`transparent`]: #the-transparent-representation
 [`Layout`]: std::alloc::Layout
+[type.pointer.reference.shared]: types/pointer.md#shared-references-
+[type.pointer.reference.mut]: types/pointer.md#mutable-references-mut
+[type.fn-pointer]: types/function-pointer.md