config: Update example configs to use rotation_distance

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

config/generic-mightyboard.cfg

@@ -8,7 +8,8 @@
 step_pin: PF1
 dir_pin: !PF0
 enable_pin: !PF2
-step_distance: .010387
+microsteps: 16
+rotation_distance: 32
 endstop_pin: ^!PL1
 position_endstop: 152
 position_max: 153
@@ -19,7 +20,8 @@ homing_speed: 50
 step_pin: PF5
 dir_pin: !PF4
 enable_pin: !PF6
-step_distance: .010387
+microsteps: 16
+rotation_distance: 32
 endstop_pin: ^!PL3
 position_endstop: 77
 position_max: 78
@@ -30,7 +32,8 @@ homing_speed: 50
 step_pin: PK1
 dir_pin: !PK0
 enable_pin: !PK2
-step_distance: .0025
+microsteps: 16
+rotation_distance: 8
 endstop_pin: !PL6
 position_endstop: 0
 position_max: 230
@@ -40,7 +43,8 @@ position_min: 0
 step_pin: PA3
 dir_pin: !PA2
 enable_pin: !PA4
-step_distance: .010387
+microsteps: 16
+rotation_distance: 33.238
 nozzle_diameter: 0.400
 filament_diameter: 1.750
 heater_pin: PH3