Updated config file section markers

Marlin/configurator/config/Configuration_adv.h

@@ -232,11 +232,17 @@
 // @section machine
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
+
+// @section hidden
+
 #ifdef CONFIG_STEPPERS_TOSHIBA
   #define MAX_STEP_FREQUENCY 10000 // Max step frequency for Toshiba Stepper Controllers
 #else
   #define MAX_STEP_FREQUENCY 40000 // Max step frequency for Ultimaker (5000 pps / half step)
 #endif
+
+// @section machine
+
 //By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false
 #define INVERT_Y_STEP_PIN false