Official Readme files are having Huggingface Download Links for the Llama models

[arjunsuresh]

The model links in the READMEs need to be replaced with the MLCommons hosted links for the ones where currently the Huggingface downloads are used, for reproducibility.

https://github.com/mlcommons/inference/tree/master/language/llama3.1-405b#mlcommons-members-download