Fix deprecated links, update README with correct git clone repo

README.md

UPDATES.md

recipes/benchmarks/inference/on-prem/README.md

recipes/inference/model_servers/llama-on-prem.md

...es/use_cases/chatbots/messenger_llama/messenger_llama2.md

recipes/use_cases/chatbots/whatsapp_llama/whatsapp_llama2.md