Updated a version number for the changes that we are making for UTR25 v16 (#1218)

Author: jowilco

unicodetools/data/math/revision-16/MathClassEx.html

@@ -55,7 +55,7 @@ <h2 style="text-align:center">MathClassEx</h2>
          <p>Revision: <b class="removed">15</b><b class="changed">16.0</b>
          </p>
          <p>Date: <span class="removed">2017-06-01, 12:35:00 GMT</span><span class="changed">2025-07-01</span></p>
-         <p>This file provides a more readable version of <a href="MathClassEx.txt">MathClassEx.txt</a><span class="removed"> and corresponds to Revision 15 of UTR #25: Unicode Support for Mathematics. The character repertoire of this revision is the repertoire of Unicode Version 9.0</span>.</p>
+         <p>This file provides a more readable version of <a href="MathClassEx.txt">MathClassEx.txt</a><span class="removed"> and corresponds to Revision 16 of UTR #25: Unicode Support for Mathematics. The character repertoire of this revision is the repertoire of Unicode Version 17.0</span>.</p>
          <p>This file is a classification of characters based on their usage in mathematical notation and providing a
       mapping to standard entity sets commonly used for SGML and MathML documents.</p>
          <p>While the contents of this file represent the best information available to the authors and the Unicode