Fix type-o.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@168715 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/www/index.html b/www/index.html
index f70493c..5d6fa27 100644
--- a/www/index.html
+++ b/www/index.html
@@ -115,7 +115,7 @@
   <h2 id="dir-structure">Current Status</h2>
   <!--=====================================================================-->
 
-   <p>libc++ is a 100% complete C++11 implemenation on Apple's OS X. </p>
+   <p>libc++ is a 100% complete C++11 implementation on Apple's OS X. </p>
 
    <p>
    Ports to other platforms are underway. Here are recent test