Better link for Library Fundamentals TS.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@252223 91177308-0d34-0410-b5e6-96231b3b80d8

www/cxx_status.html

@@ -661,7 +661,7 @@ Clang version they became available:</p>
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       <td>[TS] Library Fundamentals, Version 1 (invocation type traits)</td>
-      <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4335.html">N4335</a></td>
+      <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4480.html">N4480</a></td>
       <td class="none" align="center">No</td>
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