Update examples/phi2/README.md

Co-authored-by: kunal-vaishnavi <[email protected]>

examples/phi2/README.md

@@ -26,7 +26,7 @@ pip install onnxruntime
 Run the model builder script to export, optimize, and quantize the model. More details can be found [here](../../src/python/py/models/README.md)
 
 ```bash
-cd examples/llama
+cd examples/phi2
 python -m onnxruntime_genai.models.builder -m microsoft/phi-2 -e cpu -p int4 -o ./model
 ```