fix code snippet

README.md

@@ -26,13 +26,14 @@ This repository contains the Phi-2 weights in `npz` format suitable for use with
 pip install mlx
 pip install transformers huggingface_hub hf_transfer
 git clone https://github.com/ml-explore/mlx-examples.git
+cd mlx-examples
 
 # Download model
 export HF_HUB_ENABLE_HF_TRANSFER=1
 huggingface-cli download --local-dir-use-symlinks False --local-dir phi-2 mlx-community/phi-2
 
 # Run example
-python mlx-examples/phi2/phi2.py --prompt "My name is"
+python llms/phi2/phi2.py --prompt "My name is"
 ```
 
 The rest of the model card was copied from [the original Phi-2 repository](https://huggingface.co/microsoft/phi-2).