Fix never type link

Author: MajorBreakfast

src/types.md

@@ -32,7 +32,7 @@ language:
 [machine types]: #machine-types
 [machine-dependent integer types]: #machine-dependent-integer-types
 [textual types]: #textual-types
-[never-type]: #never-type
+[never type]: #never-type
 [Tuples]: #tuple-types
 [Arrays]: #array-and-slice-types
 [Slices]: #array-and-slice-types
@@ -432,7 +432,7 @@ order to capture a single field:
 
 ```rust
 # use std::collections::HashSet;
-# 
+#
 struct SetVec {
     set: HashSet<u32>,
     vec: Vec<u32>
@@ -554,7 +554,7 @@ traits except the first trait must be auto traits, there may not be more than
 one lifetime, and opt-out bounds (e.g. `?sized`) are not allowed. Furthermore,
 paths to traits may be parenthesized.
 
-For example, given a trait `Trait`, the following are all trait objects: 
+For example, given a trait `Trait`, the following are all trait objects:
 
 * `Trait`
 * `dyn Trait`