config: Update example configs to use rotation_distance

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

config/printer-wanhao-duplicator-i3-mini-2017.cfg

@@ -10,7 +10,8 @@
 step_pin: ar22
 dir_pin: !ar23
 enable_pin: !ar57
-step_distance: 0.0125
+microsteps: 16
+rotation_distance: 40
 endstop_pin: ^!ar19
 position_endstop: 120
 position_max: 120
@@ -20,7 +21,8 @@ homing_speed: 30.0
 step_pin: ar25
 dir_pin: ar26
 enable_pin: !ar24
-step_distance: 0.0125
+microsteps: 16
+rotation_distance: 40
 endstop_pin: ^!ar18
 position_endstop: 0
 position_max: 135
@@ -30,7 +32,8 @@ homing_speed: 30.0
 step_pin: ar29
 dir_pin: ar39
 enable_pin: !ar28
-step_distance: 0.0025
+microsteps: 16
+rotation_distance: 8
 endstop_pin: ^!ar38
 position_endstop: 0.5
 position_max: 100
@@ -39,7 +42,8 @@ position_max: 100
 step_pin: ar55
 dir_pin: !ar56
 enable_pin: !ar54
-step_distance: 0.010638298
+microsteps: 16
+rotation_distance: 34.043
 nozzle_diameter: 0.400
 filament_diameter: 1.750
 heater_pin: ar4