Editorial: update links to Ecma specs and update ECMA-402 descriptor (#…

…3013)

spec.html

@@ -172,14 +172,19 @@ <h1>Example Legacy Normative Optional Clause Heading</h1>
 <emu-clause id="sec-normative-references">
   <h1>Normative References</h1>
   <p>The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.</p>
-  <p>ISO/IEC 10646 <i>Information Technology — Universal Multiple-Octet Coded Character Set (UCS) plus Amendment 1:2005, Amendment 2:2006, Amendment 3:2008, and Amendment 4:2008</i>, plus additional amendments and corrigenda, or successor</p>
+  <p>IEEE 754-2019, <i>IEEE Standard for Floating-Point Arithmetic</i>.</p>
   <p>
-    ECMA-402, <i>ECMAScript 2015 Internationalization API Specification</i>.<br>
-    <a href="https://ecma-international.org/publications/standards/Ecma-402.htm">https://ecma-international.org/publications/standards/Ecma-402.htm</a>
+    The Unicode Standard.<br>
+    <a href="https://unicode.org/versions/latest">https://unicode.org/versions/latest</a>
+  </p>
+  <p>ISO/IEC 10646, <i>Information Technology — Universal Multiple-Octet Coded Character Set (UCS)</i> plus Amendment 1:2005, Amendment 2:2006, Amendment 3:2008, Amendment 4:2008, and additional amendments and corrigenda, or successor.</p>
+  <p>
+    ECMA-402, <i>ECMAScript Internationalization API Specification</i>, specifically the annual edition corresponding to this edition of this specification.<br>
+    <a href="https://www.ecma-international.org/publications-and-standards/standards/ecma-402/">https://www.ecma-international.org/publications-and-standards/standards/ecma-402/</a>
   </p>
   <p>
     ECMA-404, <i>The JSON Data Interchange Format</i>.<br>
-    <a href="https://ecma-international.org/publications/standards/Ecma-404.htm">https://ecma-international.org/publications/standards/Ecma-404.htm</a>
+    <a href="https://www.ecma-international.org/publications-and-standards/standards/ecma-404/">https://www.ecma-international.org/publications-and-standards/standards/ecma-404/</a>
   </p>
 </emu-clause>