change split name to acoid using reserved keyward

README.md

@@ -14,7 +14,7 @@ configs:
     path: "testmini.parquet"
 - config_name: testmini_all
   data_files:
-  - split: all
+  - split: testmini_all # all is a reserved keyword
     path: "testmini_all.parquet"
 - config_name: testmini_version_split
   data_files:
@@ -102,7 +102,7 @@ dataset_info:
       - dtype: string
         name: question_for_eval
     splits:
-      - name: all
+      - name: testmini_all
         num_bytes: 180341296
         num_examples: 4728
   - config_name: testmini_version_split