update readme

README.md

@@ -75,9 +75,9 @@ configs:
 - config_name: ironita
   data_files:
   - split: train
-    path: ironita/train.parquet
+    path: ironita/train.tsv
   - split: test
-    path: ironita/test.parquet
+    path: ironita/test.tsv
 - config_name: sentipolc
   data_files:
   - split: train