Update README.md

README.md

@@ -17,25 +17,23 @@ size_categories:
 
 ## Usage
 
-```
+```python
 from datasets import load_dataset
 
-trainset = load_dataset("MuGeminorum/Pima", split="train")
-validset = load_dataset("MuGeminorum/Pima", split="validation")
-testset = load_dataset("MuGeminorum/Pima", split="test")
+dataset = load_dataset("MuGeminorum/Pima")
 
-for item in trainset:
+for item in dataset["train"]:
     print(item)
 
-for item in validation:
+for item in dataset["validation"]:
     print(item)
 
-for item in testset:
+for item in dataset["test"]:
     print(item)
 
 ```
 
 ## Maintenance
-```
+```bash
 git clone git@hf.co:datasets/MuGeminorum/Pima
 ```