Fix probe range editing

- Increase the probe offset range to -20…20
- Apply the range limits to the menu item

Marlin/Configuration.h

 #ifdef CUSTOM_M_CODES
   #ifdef ENABLE_AUTO_BED_LEVELING
     #define CUSTOM_M_CODE_SET_Z_PROBE_OFFSET 851
-    #define Z_PROBE_OFFSET_RANGE_MIN -15
-    #define Z_PROBE_OFFSET_RANGE_MAX -5
+    #define Z_PROBE_OFFSET_RANGE_MIN -20
+    #define Z_PROBE_OFFSET_RANGE_MAX 20
   #endif
 #endif
 

Marlin/ultralcd.cpp

   START_MENU();
   MENU_ITEM(back, MSG_CONTROL, lcd_control_menu);
   #ifdef ENABLE_AUTO_BED_LEVELING
-    MENU_ITEM_EDIT(float32, MSG_ZPROBE_ZOFFSET, &zprobe_zoffset, 0.0, 50);
+    MENU_ITEM_EDIT(float32, MSG_ZPROBE_ZOFFSET, &zprobe_zoffset, Z_PROBE_OFFSET_RANGE_MIN, Z_PROBE_OFFSET_RANGE_MAX);
   #endif
   MENU_ITEM_EDIT(float5, MSG_ACC, &acceleration, 10, 99000);
   MENU_ITEM_EDIT(float3, MSG_VXY_JERK, &max_xy_jerk, 1, 990);