Fix wrong condition

- Fixes #110.

Author: martignoni

index.php

@@ -62,7 +62,7 @@
             $platform = 'rpi3aplus';
             break;
         case '3B':
-            $platform = 'rpi3';
+            $platform = 'rpi3b';
             break;
         case '3B+':
             $platform = 'rpi3bplus';