add python syntax highlights

Syntax highlights for readability

README.md

@@ -28,7 +28,7 @@ This is the chat model finetuned on [PY007/TinyLlama-1.1B-intermediate-step-240k
 #### How to use
 You will need the transformers>=4.31
 Do check the [TinyLlama](https://github.com/jzhang38/TinyLlama) github page for more information.
-```
+```python
 from transformers import AutoTokenizer
 import transformers 
 import torch