Fix Docs CI When Compile Error

[zhaochenyang20]

Motivation

I find that our current docs are broken in native_api:

https://sgl-project.github.io/backend/native_api.html

I changed the rules of docs CI. When one ipynb file fails to compile, the CI will end in error. And I changed native_api for a quick fix on update_weights_from_disk and encode (change reward to encode).

Also, I will fix #2322 this week. This is not highly prioritized and I have some personal things this week. I think I will edit the llama.py in our models for a quick fix on this.

Modifications

See this motivation above.

Checklist

• Format your code according to the Contributor Guide.
• Add unit tests as outlined in the Contributor Guide.
• Update documentation as needed, including docstrings or example tutorials.