Update README.md

Fix forum link

Author: Ashura

README.md

@@ -15,5 +15,5 @@ Please refer to our website http://www.lakka.tv/get on how to setup Lakka.
 
 * [FAQ](https://github.com/lakkatv/Lakka/wiki/FAQ)
 * #lakkatv on irc.freenode.org
-* [Forums](http://libretro.com/forums/forumdisplay.php?f=26)
+* [Forums](https://forums.libretro.com/c/libretro/lakka-tv-general)
 * [email protected]