docs(*): Clippy fixes with markdown docs

src/header/common/cache_control.rs

@@ -70,7 +70,7 @@ impl HeaderFormat for CacheControl {
     }
 }
 
-/// CacheControl contains a list of these directives.
+/// `CacheControl` contains a list of these directives.
 #[derive(PartialEq, Clone, Debug)]
 pub enum CacheDirective {
     /// "no-cache"

src/header/common/host.rs

@@ -8,7 +8,7 @@ use header::parsing::from_one_raw_str;
 /// client requests add one automatically.
 ///
 /// Currently is just a String, but it should probably become a better type,
-/// like url::Host or something.
+/// like `url::Host` or something.
 ///
 /// # Examples
 /// ```

src/header/common/range.rs

@@ -64,8 +64,8 @@ pub enum Range {
     Unregistered(String, String)
 }
 
-/// Each Range::Bytes header can contain one or more ByteRangeSpecs.
-/// Each ByteRangeSpec defines a range of bytes to fetch
+/// Each `Range::Bytes` header can contain one or more `ByteRangeSpecs`.
+/// Each `ByteRangeSpec` defines a range of bytes to fetch
 #[derive(PartialEq, Clone, Debug)]
 pub enum ByteRangeSpec {
     /// Get all bytes between x and y ("x-y")