Fix inconsistency.

whatsnew.htm

@@ -32,7 +32,7 @@ For conditions of distribution and use, see <a href="files/is/license.txt">LICEN
 
 <p><a name="6.3.1"></a><span class="ver">6.3.1 </span><span class="date">(2024-06-10)</span></p>
 <ul>
-  <li>Fix Compiler IDE startup error on systems with very high DPI.</li>
+  <li>Fixed Compiler IDE startup error on systems with very high DPI.</li>
 </ul>
 
 <p><a name="6.3.0"></a><span class="ver">6.3.0 </span><span class="date">(2024-06-09)</span></p>