Update Changelog

Author: GaryKeeble

changelog.html

@@ -56,6 +56,7 @@ <h2> 2.5.8 - DShot Logging and Minor Bug Fixes</h2>
         <li>Add new debug fields to header and logs.</li>
         <li>Add OSD and ESC features options to header dialog.</li>
         <li>Add new BF3.1.0 parameters to header dialog.</li>
+        <li>Add user setting to show raw values on legend.</li>
     </ul>
 
     <h2> 2.5.7 - Minor Bug Fixes and Feature Improvements</h2>