Better i3-2020 Z_PROBE_OFFSET_FROM_EXTRUDER

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration.h

  */
 #define X_PROBE_OFFSET_FROM_EXTRUDER 38     // X offset: -left  +right  [of the nozzle]
 #define Y_PROBE_OFFSET_FROM_EXTRUDER -7     // Y offset: -front +behind [the nozzle]
-#define Z_PROBE_OFFSET_FROM_EXTRUDER -10.30 // Z offset: -below +above  [the nozzle]
+#define Z_PROBE_OFFSET_FROM_EXTRUDER -10.75 // Z offset: -below +above  [the nozzle]
 
 // Certain types of probes need to stay away from edges
 #define MIN_PROBE_EDGE 0