Update config.py

RS-tf/PNN/config.py

-RAIN_FILE = "data/train.csv"
+TRAIN_FILE = "data/train.csv"
 TEST_FILE = "data/test.csv"
 
 SUB_DIR = "output"
@@ -40,4 +40,4 @@ IGNORE_COLS = [
     "ps_calc_13", "ps_calc_14",
     "ps_calc_15_bin", "ps_calc_16_bin", "ps_calc_17_bin",
     "ps_calc_18_bin", "ps_calc_19_bin", "ps_calc_20_bin"
-]
\ No newline at end of file
+]