change struct description to pred.normalize() for consistency

Add Cfg feature to NormalizedPredicate in adapter.rs

Author: kammitama5

src/str/adapters.rs

@@ -11,6 +11,7 @@ use std::fmt;
 use std::str;
 
 use Predicate;
+#[cfg(feature = "normalize-line-endings")]
 use str::normalize::NormalizedPredicate;
 
 /// Predicate adaper that trims the variable being tested.

src/str/normalize.rs

@@ -15,7 +15,7 @@ use std::iter::FromIterator;
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 /// Predicate adapter that normalizes the newlines contained in the variable being tested.
 ///
-/// This is created by `pred.normalized()`.
+/// This is created by `pred.normalize()`.
 pub struct NormalizedPredicate<P>
 where
     P: Predicate<str>,