Change fan RPM display to 5 digits

All credits to @ WarrenSchultz for initial PR https://github.com/prusa3d/Prusa-Firmware/pull/3656

Firmware/ultralcd.cpp

@@ -1115,7 +1115,7 @@ void lcd_menu_extruder_info()                     // NOT static due to using ins
 
     lcd_timeoutToStatus.stop(); //infinite timeout
     lcd_home();
-	lcd_printf_P(PSTR("%-16.16S%-4d\n" "%-16.16S%-4d\n"), _T(MSG_HOTEND_FAN_SPEED), 60*fan_speed[0], _T(MSG_PRINT_FAN_SPEED), 60*fan_speed[1] ); 
+	lcd_printf_P(PSTR("%-15.15S%-5d\n" "%-15.15S%-5d\n"), _T(MSG_HOTEND_FAN_SPEED), 60*fan_speed[0], _T(MSG_PRINT_FAN_SPEED), 60*fan_speed[1] ); 
     menu_back_if_clicked();
 }