[Keyboard] mach3 LED index correction (#17110)

keyboards/machkeyboards/mach3/mach3.c

@@ -19,8 +19,8 @@
 led_config_t g_led_config = { {
   // Key Matrix to LED Index
   {  0,  1,  2 },
-  {  7,  6,  5 },
-  {  8,  9, 10 },
+  {  5,  4,  3 },
+  {  6,  7,  8 },
 }, {
   // LED Index to Physical Position
   { 0,  0 },   { 112,  0 },   { 224,  0 },
@@ -39,4 +39,4 @@ void keyboard_pre_init_kb(void) {
   writePinHigh(F5);
   
   keyboard_pre_init_user();
-}
+}