[Doc] Update ViT CUDA graph interfaces

[shen-shanshan]

Purpose

Solve #41234 (comment).

Update the ViT CUDA graph doc following the changes in #41234 and #42288.

Test Plan

Test Result

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Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.

[shen-shanshan]

CC @Isotr0py

[mergify]

Documentation preview: https://vllm--44388.org.readthedocs.build/en/44388/

[mergify]

Hi @shen-shanshan, the pre-commit checks have failed. Please run:

uv pip install pre-commit>=4.5.1
pre-commit install
pre-commit run --all-files

Then, commit the changes and push to your branch.

For future commits, pre-commit will run automatically on changed files before each commit.

Tip

Is mypy failing?

mypy is run differently in CI. If the failure is related to this check, please use the following command to run it locally:

# For mypy (substitute "3.10" with the failing version if needed)
pre-commit run --hook-stage manual mypy-3.10