fixed typo in example.py

user/example.py

@@ -18,7 +18,7 @@ parser.add_argument('-bin_0', type=float, default=-100.0, help='SELECT FIRST BIN
 parser.add_argument('-truncate_nsigma0_up', type=float, default=2.0, help='SCAN SPECTRUM FROM Q < Q_0 - 4 sigma_0')
 parser.add_argument('-truncate_nsigma0_do', type=float, default=2.0, help='EVALUATE SPECTRUM CHI2 IN Q_0 - x*sigma_0 < Q < Q_0 + 2*sigma_0')
 parser.add_argument('-prefit_only', action='store_true', help='FIT THE WHOLE SPECTRUM')
-parser.add_argument('-folder', type=str, default='data/hamamatsu_pcb6/trial', help='Directory containing the data files')
+parser.add_argument('-folder', type=str, default='data/hamamatsu_pcb6/Light', help='Directory containing the data files')
 
 args = parser.parse_args()