Replace YAML keys from int to str (#2)

- Replace YAML keys from int to str (685d6cf95c820a1a833ae42b5ed3e9f2ca3e991a)

README.md

@@ -33,9 +33,9 @@ dataset_info:
     dtype:
       class_label:
         names:
-          0: NEUTRAL
-          1: CONTRADICTION
-          2: ENTAILMENT
+          '0': NEUTRAL
+          '1': CONTRADICTION
+          '2': ENTAILMENT
   splits:
   - name: train
     num_bytes: 1381902