Update README.md

README.md

@@ -37,7 +37,7 @@ You can download the dataset by the following command (Taking downloading billia
 
 ```python
 from datasets import load_dataset
-dataset = load_dataset("YiyangAiLab/MIRA", "billiards", split="test")
+dataset = load_dataset("YiyangAiLab/MIRA", "billiards")
 ```
 
 ### Data Format