fixing typo

job.py

@@ -65,7 +65,7 @@ commit_id = subprocess.check_output("git log --pretty=format:'%H' -n 1", shell=T
 parser = argparse.ArgumentParser()
 
 parser.add_argument("--time_wall",
-                    default="no-limit",
+                    default="no_limit",
                     help="Time wall. Choose in [no-limit, hour, half, quarter]")
 
 parser.add_argument("--model_name",