db 버전으로 수정

emergency_tool.py

@@ -33,7 +33,7 @@ print('4. Change host')
 print('5. Change port')
 print('6. Change skin')
 print('7. Change password')
-print('8. Change version')
+print('8. Set db version')
 print('9. Delete set.json')
 print('10. Change name')
 print('11. Delete mysql.json')