Auto merge of #81 - rdwilliamson:patch-1, r=mbrubeck

Fix as_slice documentation.

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Author: bors-servo

lib.rs

@@ -519,7 +519,7 @@ impl<A: Array> SmallVec<A> {
 
     /// Extracts a slice containing the entire vector.
     ///
-    /// Equivalent to `&mut s[..]`.
+    /// Equivalent to `&s[..]`.
     pub fn as_slice(&self) -> &[A::Item] {
         self
     }