Jean-Daniel Dupas fixes install directions

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@126222 91177308-0d34-0410-b5e6-96231b3b80d8

www/index.html

@@ -157,7 +157,8 @@
 
   <ul>
     <li><code>cd /usr/lib</code></li>
-    <li><code>sudo ln -sf path-to-libcxx/lib/libc++.1.dylib libc++.dylib</code></li>
+    <li><code>sudo ln -sf path-to-libcxx/lib/libc++.1.dylib libc++.1.dylib</code></li>
+    <li><code>sudo ln -sf libc++.1.dylib libc++.dylib</code></li>
     <li><code>cd /usr/include/c++</code></li>
     <li><code>sudo ln -sf path-to-libcxx/include v1</code></li>
   </ul>