Comment, spacing cleanup

Marlin/src/HAL/STM32/fast_pwm.cpp

@@ -32,7 +32,7 @@ void set_pwm_frequency(const pin_t pin, int f_desired) {
 
   PinName pin_name = digitalPinToPinName(pin);
   TIM_TypeDef *Instance = (TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM); // Get HAL timer instance
-  
+
   LOOP_S_L_N(i, 0, NUM_HARDWARE_TIMERS) // Protect used timers
     if (timer_instance[i] && timer_instance[i]->getHandle()->Instance == Instance)
       return;