Update README.md

README.md

@@ -23,8 +23,8 @@ Dataset
 | annealing         | Multiclass classification |                                                               |
 
 # Usage
-```
+```python
 from datasets import load_dataset
 
-dataset = load_dataset("mstz/annealing", "annealing")["train"]
+dataset = load_dataset("mstz/annealing")["train"]
 ```