Update README.md

README.md

@@ -91,8 +91,7 @@ Install the required packages:
 
 ```Shell
 pip install git+https://github.com/huggingface/transformers@main
-pip install torchao
-pip install torch
+pip install --pre torchao torch --index-url https://download.pytorch.org/whl/nightly/cu126
 pip install accelerate
 ```