Make Arabic official.

whatsnew.htm

@@ -40,7 +40,8 @@ For conditions of distribution and use, see <a href="files/is/license.txt">LICEN
 <ul>
   <li><i>Fix:</i> In 6.4.0, using &quot;Shift+&quot; in a <tt>HotKey</tt> parameter in the [Icons] section didn't work and required &quot;Shift&quot; instead, so for example &quot;Ctrl+ShiftM&quot; instead of &quot;Ctrl+Shift+M&quot;.</li>
   <li><i>Fix:</i> In 6.4.0, a custom form shown using <tt>[Code]</tt> didn't have a taskbar button if Setup's wizard was not visible at the time.</li>
-  <li>Various tweaks and improvements.</li>
+  <li>Added official Arabic translation.</li>
+  <li>Some minor tweaks and improvements.</li>
 </ul>
 
 <p><a name="6.4.0"></a><span class="ver">6.4.0 </span><span class="date">(2025-01-09)</span></p>