Fixed typo.

Signed-off-by: Christian Inci <chris.pcguy.inci@gmail.com>

Marlin/ultralcd.cpp

@@ -800,7 +800,7 @@ static void lcd_control_temperature_menu()
 
     START_MENU();
     MENU_ITEM(back, MSG_CONTROL, lcd_control_menu);
-#if TEMP_SENSOR_1 != 0
+#if TEMP_SENSOR_0 != 0
     MENU_ITEM_EDIT(int3, MSG_NOZZLE, &target_temperature[0], 0, HEATER_0_MAXTEMP - 15);
 #endif
 #if TEMP_SENSOR_1 != 0