Patch max_jerk[Z] menu item

Marlin/ultralcd.cpp

     MENU_ITEM_EDIT(float3, MSG_VX_JERK, &planner.max_jerk[X_AXIS], 1, 990);
     MENU_ITEM_EDIT(float3, MSG_VY_JERK, &planner.max_jerk[Y_AXIS], 1, 990);
     #if ENABLED(DELTA)
-      MENU_ITEM_EDIT(float3, MSG_VZ_JERK, &planner.max_jerk[Y_AXIS], 1, 990);
+      MENU_ITEM_EDIT(float3, MSG_VZ_JERK, &planner.max_jerk[Z_AXIS], 1, 990);
     #else
       MENU_ITEM_EDIT(float52, MSG_VZ_JERK, &planner.max_jerk[Z_AXIS], 0.1, 990);
     #endif