fix(readme.md): fix features description

README.md

@@ -3,7 +3,7 @@ license: apache-2.0
 dataset_info:
   features:
   - name: text
-    dtype: string
+    sequence: string
   - name: labels
     sequence:
       class_label:
@@ -43,16 +43,16 @@ dataset_info:
           '32': S-GPE.NOM
   splits:
   - name: train
-    num_bytes: 800721
+    num_bytes: 1095833
     num_examples: 1350
   - name: validation
-    num_bytes: 157917
+    num_bytes: 215953
     num_examples: 270
   - name: test
-    num_bytes: 161326
+    num_bytes: 220694
     num_examples: 270
-  download_size: 647092
-  dataset_size: 1119964
+  download_size: 217348
+  dataset_size: 1532480
 language:
 - zh
 tags: