Fix src/libcore/str/mod.rs doc comments

diff --git a/src/libcore/str/mod.rs b/src/libcore/str/mod.rs
index 3da992dca30eefcebd46d61f6796cd7f09c9963c..e2cc99813aca55eb2461bb7ed7c18090478f3c4e 100644 (file)
--- a/src/libcore/str/mod.rs
+++ b/src/libcore/str/mod.rs
@@ -2325,7 +2325,7 @@ pub fn get_mut<I: SliceIndex<str>>(&mut self, i: I) -> Option<&mut I::Output> {
         i.get_mut(self)
     }
 
-    /// Returns a unchecked subslice of `str`.
+    /// Returns an unchecked subslice of `str`.
     ///
     /// This is the unchecked alternative to indexing the `str`.
     ///