[cxx_status] Be a bit more precise.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@211470 91177308-0d34-0410-b5e6-96231b3b80d8

www/cxx_status.html

@@ -424,7 +424,7 @@ change.</span>
 
 <h2 id="cxx14">C++1y implementation status</h2>
 
-<p>Clang implements all of the latest working draft (see <a
+<p>Clang implements all of the Draft International Standard (see <a
 href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3797.pdf">most
 recent publicly available draft</a>)
 of the upcoming C++ language standard, provisionally named C++1y.  The following