Update README.md

README.md

@@ -14,8 +14,8 @@ configs:
   data_files: cube.parquet
 - config_name: cube_easy
   data_files: cube_easy.parquet
-- config_name: portal_blanks
+- config_name: portal_fff
   data_file: portal_blanks.jsonl
-- config_name: portal_binary
+- config_name: portal_bbb
   data_files: portal_binary.jsonl
 ---