Fix E-steps/mm for Geeetech A10M/A20M (#13954)

config/examples/Geeetech/A10M/Configuration.h

  * Override with M92
  *                                      X, Y, Z, E0 [, E1[, E2[, E3[, E4[, E5]]]]]
  */
-#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80.3, 80.8, 400, 340 }
+#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80.3, 80.8, 400, 430 }
 
 /**
  * Default Max Feed Rate (mm/s)

config/examples/Geeetech/A20M/Configuration.h

  * Override with M92
  *                                      X, Y, Z, E0 [, E1[, E2[, E3[, E4[, E5]]]]]
  */
-#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80.3, 80.8, 400, 340 }
+#define DEFAULT_AXIS_STEPS_PER_UNIT   { 80.3, 80.8, 400, 430 }
 
 /**
  * Default Max Feed Rate (mm/s)