docs: for pull #2220, fixed 1 outdated doc(s)

[joggrbot]

✨ Autofixed 1 outdated doc(s)

This pull was automatically generated by Joggr to fix 1 outdated doc(s) due to code changes in pull #2220

Fixed docs

The following docs were fixed:

• website/docs/user-guide/models/anthropic.mdx: The core documentation did not reference or instruct users on the new structured outputs and strict tool schema features released for Anthropic Claude models (Sonnet 4.5+, Opus 4.1+), did not update the requirements to mention model/SDK minimums or fallback modes, nor describe configuration of response_format or strict tools. I updated only those parts of the doc to fully represent the new capabilities and requirements, while adding pointers to the new notebook deep-dive.

How to fix

To fix the docs, you can either:

1. Merge this pull request into your pull request to fix the docs
2. Wait for your pull request to be merged and then merge this pull request into your base branch

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