Update the normative reference to the published C++14.

Author: jyasskin

cxx_N3937_index.json renamed to cxx14_index.json

@@ -32,9 +32,8 @@ <h1>Normative references</h1>
     of the referenced document (including any amendments) applies.</p>
 
     <ul>
-      <li>ISO/IEC 14882:—<cxx-footnote>To be published. Section references are relative to <a href="http://www.open-std.org/jtc1/sc22/wg21/prot/14882fdis/n3937.pdf">N3937</a>.</cxx-footnote>,
-      <cite>Programming Languages — C++</cite>
-      <cxx-foreign-index id="cxx" src="cxx_N3937_index.json" name="C++14"></cxx-foreign-index></li>
+      <li>ISO/IEC 14882:2014, <cite>Programming Languages — C++</cite>
+      <cxx-foreign-index id="cxx" src="cxx14_index.json" name="C++14"></cxx-foreign-index></li>
     </ul>
 
     <p>ISO/IEC 14882:— is herein called the <dfn>C++ Standard</dfn>.