config: Update example configs to use rotation_distance

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

config/printer-wanhao-duplicator-6-2016.cfg

@@ -8,7 +8,8 @@
 step_pin: PA3
 dir_pin: !PA1
 enable_pin: !PA5
-step_distance: 0.0125
+microsteps: 16
+rotation_distance: 40
 endstop_pin: ^!PA0
 position_endstop: 0
 position_max: 200
@@ -18,7 +19,8 @@ homing_speed: 50
 step_pin: PC5
 dir_pin: PC4
 enable_pin: !PC6
-step_distance: 0.0125
+microsteps: 16
+rotation_distance: 40
 endstop_pin: ^!PA4
 position_endstop: 0
 position_max: 200
@@ -28,7 +30,8 @@ homing_speed: 50
 step_pin: PC2
 dir_pin: !PC1
 enable_pin: !PC3
-step_distance: 0.0025
+microsteps: 16
+rotation_distance: 8
 endstop_pin: ^!PA7
 position_endstop: 0.5
 position_max: 175
@@ -38,7 +41,8 @@ homing_speed: 25
 step_pin: PL7
 dir_pin: !PL6
 enable_pin: !PC0
-step_distance: 0.010091
+microsteps: 16
+rotation_distance: 33.291
 nozzle_diameter: 0.400
 filament_diameter: 1.7500
 heater_pin: PE4