Update README.md

fix code formatting

README.md

@@ -54,7 +54,7 @@ print(f"{probs[0][0]:.1%} that image 0 is '{texts[0]}'")
 
 Alternatively, one can leverage the pipeline API which abstracts away the complexity for the user:
 
-```
+```python
 from transformers import pipeline
 from PIL import Image
 import requests