fix: README

README.md

@@ -32,11 +32,8 @@ dataset_info:
   - name: label
     dtype:
       class_label:
-        '0': 'very negative'
-        '1': 'negative'
-        '2': 'neutral'
-        '3': 'positive'
-        '4': 'very positive'
+        '0': 'negative'
+        '1': 'positive'
 
 configs:
 - config_name: sst5