Marlin code whitespace cleanup

Marlin/src/module/stepper.h

@@ -302,7 +302,7 @@ class Stepper {
       #endif
 
       #ifdef CPU_32_BIT
-        // In case of high-performance processor, it is able to calculate in real-time 
+        // In case of high-performance processor, it is able to calculate in real-time
         timer = (uint32_t)(HAL_STEPPER_TIMER_RATE) / step_rate;
         if (timer < (HAL_STEPPER_TIMER_RATE / (STEP_DOUBLER_FREQUENCY * 2))) { // (STEP_DOUBLER_FREQUENCY * 2 kHz - this should never happen)
           timer = (HAL_STEPPER_TIMER_RATE / (STEP_DOUBLER_FREQUENCY * 2));