[None][docs] Add deprecation notice to legacy support-matrix.md

[fuergaosi233]

Background

docs/source/legacy/reference/support-matrix.md is a legacy page that is still publicly accessible and indexed, but it lacks any indication that it is outdated. Users landing on this page may act on stale information — for example, the page is missing 15+ architectures that are present in the current docs/source/models/supported-models.md.

Compared with the current supported-models page, the legacy support-matrix is missing entries like: Llama 4, Qwen 3, Gemma 3, Phi 4, DeepSeek-R1, EXAONE 4.0, and many others.

Changes

Added a {deprecated} admonition at the top of the page, pointing users to the up-to-date docs/source/models/supported-models.md page:

\`\`\`{deprecated}
This page is outdated and no longer maintained. Please refer to the up-to-date [Supported Models](../../models/supported-models.md) page instead.
\`\`\`

This follows the Sphinx {deprecated} directive convention and renders visibly in the built documentation without removing or altering any existing content on the page.

Verification

Confirmed the legacy page has no deprecation notice:

$ head -5 docs/source/legacy/reference/support-matrix.md
# Support Matrix
TensorRT-LLM optimizes the performance of a range of well-known models...

Confirmed the current page exists at the linked path:

$ ls docs/source/models/supported-models.md
docs/source/models/supported-models.md

Summary by CodeRabbit

• Documentation
  • Marked the legacy support matrix documentation as deprecated, with a notice directing users to the updated "Supported Models" reference page.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 3c1cac4c-3f71-43dc-bcf3-f7143c0c4e8e

📥 Commits

Reviewing files that changed from the base of the PR and between c5b0372 and ab60e5e.

📒 Files selected for processing (1)

• docs/source/legacy/reference/support-matrix.md

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📝 Walkthrough

Walkthrough

A Sphinx {deprecated} admonition is added to the top of the legacy support-matrix.md documentation page, indicating the page is outdated and no longer maintained, with a reference to the current Supported Models documentation.

Changes

Documentation Deprecation

Layer / File(s)	Summary
Deprecation notice for legacy support matrix docs/source/legacy/reference/support-matrix.md	A Sphinx {deprecated} admonition is added to the top of the page indicating the page is outdated and directing readers to the current "Supported Models" reference.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: adding a deprecation notice to the legacy support-matrix documentation file.
Description check	✅ Passed	The description is comprehensive, covering background, specific changes made, and verification steps. However, it lacks a Test Coverage section and does not explicitly address PR checklist items as required by the template.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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