fix a bug, there is a typo in cell-relax

source/driver_run.cpp

@@ -59,7 +59,7 @@ void Driver::driver_run(void)
     }
     else if(cal_type == "scf" 
          || cal_type == "relax" 
-         || cal_type == "cell_relsx")
+         || cal_type == "cell-relax")
     {
         Relax_Driver rl_driver;
         rl_driver.relax_driver(p_esolver);