update Readme

README.md

@@ -3,10 +3,9 @@ annotations_creators:
 - expert-generated
 language_creators:
 - expert-generated
-languages:
+language:
 - en
-licenses:
-- cc-by-sa-4-0
+license: cc-by-sa-4.0
 multilinguality:
 - monolingual
 pretty_name: FiNER-139
@@ -19,6 +18,15 @@ task_categories:
 - entity-extraction
 task_ids:
 - named-entity-recognition
+train-eval-index:
+- config: finer-139
+  task: token-classification
+  task_id: entity_extraction
+  splits:
+    eval_split: train
+  col_mapping:
+    tokens: tokens
+    ner_tags: tags
 ---
 
 # Dataset Card for FiNER-139