Update config.h for kbdfans/kbd67/mkiirgb/v3 (#13978)

QMK Configurator does not compile - needs a value on RGB_DISABLE_WHEN_USB_SUSPENDED

keyboards/kbdfans/kbd67/mkiirgb/v3/config.h

@@ -42,7 +42,7 @@
 #define NO_ACTION_FUNCTION
 #ifdef RGB_MATRIX_ENABLE
 #define RGB_DISABLE_AFTER_TIMEOUT 0 // number of ticks to wait until disabling effects
-#define RGB_DISABLE_WHEN_USB_SUSPENDED // turn off effects when suspended
+#define RGB_DISABLE_WHEN_USB_SUSPENDED true // turn off effects when suspended
 #define USB_SUSPEND_WAKEUP_DELAY 5000
 #define RGB_MATRIX_KEYPRESSES
 #define DISABLE_RGB_MATRIX_GRADIENT_UP_DOWN