Update index.html

Fixed typo on version number

Author: maboa

index.html

@@ -1,6 +1,6 @@
 <!--  (C) The Hyperaudio Project. AGPL 3.0 @license: https://www.gnu.org/licenses/agpl-3.0.en.html -->
 
-<!--  Hyperaudio Lite Editor - Version 0.4.5 -->
+<!--  Hyperaudio Lite Editor - Version 0.4.3 -->
 
 <!--  Hyperaudio Lite Editor's source code is provided under a dual license model.