config: Update example configs to use rotation_distance

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

config/printer-creality-cr20-pro-2019.cfg

@@ -7,7 +7,8 @@
 step_pin: PF0
 dir_pin: PF1
 enable_pin: !PD7
-step_distance: .0125
+microsteps: 16
+rotation_distance: 40
 endstop_pin: ^PE5
 position_endstop: 0
 position_max: 235
@@ -17,7 +18,8 @@ homing_speed: 100
 step_pin: PF6
 dir_pin: PF7
 enable_pin: !PF2
-step_distance: .0125
+microsteps: 16
+rotation_distance: 40
 endstop_pin: ^PJ1
 position_endstop: 0
 position_max: 235
@@ -27,7 +29,8 @@ homing_speed: 100
 step_pin: PL3
 dir_pin: !PL1
 enable_pin: !PK0
-step_distance: .0025
+microsteps: 16
+rotation_distance: 8
 endstop_pin: probe:z_virtual_endstop
 position_max: 250
 homing_speed: 10.0
@@ -37,7 +40,8 @@ position_min: -1.0
 step_pin: PA4
 dir_pin: PA6
 enable_pin: !PA2
-step_distance: .010526
+microsteps: 16
+rotation_distance: 33.683
 nozzle_diameter: 0.400
 filament_diameter: 1.750
 heater_pin: PB4