Update README.md

README.md

@@ -19,6 +19,7 @@ task_ids:
 - document-retrieval
 configs:
 - config_name: default
+  default: true
   data_files:
   - split: eng
     path: data/news.eng.tsv
@@ -28,6 +29,9 @@ configs:
     path: data/news.rus.tsv
   - split: zho
     path: data/news.zho.tsv
+  format: csv
+  sep: "\t"
+  header: null
 dataset_info:
   features:
   - name: id