Doc: 6.2.3 -> 6.3

ISHelp/isetup.xml

@@ -2769,7 +2769,7 @@ Type: files; Name: "{win}\MYPROG.INI"
 <p>If you don't remember which version you installed, click the "Inno Setup Compiler" shortcut created in the Start Menu. If the version number displayed in its title bar says "(a)" you are running Non Unicode Inno Setup. Otherwise you are running Unicode Inno Setup.</p>
 <p>For the most part the two versions are used identically, and any differences between them are noted throughout the help file. However, the following overview lists the primary differences:</p>
   <ul>
-  <li>Unicode Inno Setup supports UTF-8 encoded .iss and .isl files. Starting with Inno Setup 6.2.3 an UTF-8 preamble (also called BOM) is no longer required. UTF-16 is not supported.</li>
+  <li>Unicode Inno Setup supports UTF-8 encoded .iss and .isl files. Starting with Inno Setup 6.3, a UTF-8 preamble (also called BOM) is no longer required. UTF-16 is not supported.</li>
   <li>Any existing ANSI .isl language files are automatically converted during compilation using the <tt>LanguageCodePage</tt> setting of the language.</li>
   <li>Any [Messages] and [CustomMessages] entries in existing ANSI .iss script files must to be converted to Unicode manually if the language used a special <tt>LanguageCodePage</tt>.</li>
   <li>Unicode Inno Setup supports UTF-8 and UTF-16LE encoded .txt files for <tt>LicenseFile</tt>, <tt>InfoBeforeFile</tt>, and <tt>InfoAfterFile</tt>.</li>