Clarify MICROSTEP_MODES

Marlin/Configuration_adv.h

@@ -953,7 +953,7 @@
 //#define MICROSTEP16 LOW,LOW,HIGH
 //#define MICROSTEP32 HIGH,LOW,HIGH
 
-// Microstep setting (Only functional when stepper driver microstep pins are connected to MCU.
+// Microstep settings (Requires a board with pins named X_MS1, X_MS2, etc.)
 #define MICROSTEP_MODES { 16, 16, 16, 16, 16, 16 } // [1,2,4,8,16]
 
 /**