Update README.md

Modifying readme link to point to llama.com site

recipes/quickstart/NotebookLlama/README.md

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 ## Notebook Llama
 
-This recipe has moved to a new directory, [NotebookLlama: An Open Source version of NotebookLM](https://github.com/meta-llama/llama-cookbook/tree/main/end-to-end-use-cases/NotebookLlama).
+This recipe has moved to a new directory, [Building a Notebook Llama: A Step-by-Step Guide](https://www.llama.com/resources/cookbook/how-to-build-notebook-llama/).
 
 Please update any bookmarks and scripts to point to this new location.