Improve A20M config

config/examples/Geeetech/A20M/Configuration.h

  * Commands to execute at the end of G29 probing.
  * Useful to retract or move the Z probe out of the way.
  */
-//#define Z_PROBE_END_SCRIPT "G1 Z10 F12000\nG1 X15 Y330\nG1 Z0.5\nG1 Z10"
+#define Z_PROBE_END_SCRIPT "G1 Z5 F6000\nG1 X10 Y10\nG1 Z0.2"
 
 
 // @section homing
 
 #if ENABLED(NOZZLE_PARK_FEATURE)
   // Specify a park position as { X, Y, Z_raise }
-  #define NOZZLE_PARK_POINT { 3, (Y_MAX_POS - 3), 10 }
+  #define NOZZLE_PARK_POINT { X_MIN_POS, Y_MIN_POS, 6 }
   #define NOZZLE_PARK_XY_FEEDRATE 100   // (mm/s) X and Y axes feedrate (also used for delta Z axis)
   #define NOZZLE_PARK_Z_FEEDRATE 5      // (mm/s) Z axis feedrate (not used for delta printers)
 #endif