[None][docs] fix longbench README Directory Structure sparse_attention→longbench

[imitater-dou]

Summary

• examples/longbench/README.md Directory Structure still showed a top-level sparse_attention/ tree for the LongBench eval scripts.
• On main, those files live under examples/longbench/; examples/sparse_attention/ now only contains RocketKV.md.
• Rename the Directory Structure root from sparse_attention/ to longbench/. Docs-only; no code or flag changes.

Test plan

• Confirmed examples/longbench/ contains eval_longbench_v1.py, README.md, requirements.txt
• Confirmed examples/sparse_attention/ only has RocketKV.md
• Diff is the single Directory Structure root rename

Dev Engineer Review

The change corrects the documented directory name in examples/longbench/README.md from sparse_attention/ to longbench/. It is documentation-only and introduces no code, configuration, API, or performance risk.

QA Engineer Review

No test changes.

Per-File QA Perspective

• examples/longbench/README.md: The directory structure example now matches the repository layout. QA should verify that the documented paths remain accurate.

[coderabbitai]

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📥 Commits

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• examples/longbench/README.md

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Walkthrough

The README directory structure now uses longbench/ instead of sparse_attention/.

Changes

LongBench documentation

Layer / File(s)	Summary
Update directory reference examples/longbench/README.md	The README now references the longbench/ directory. Previously, it referenced sparse_attention/.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 7fafd

The LongBench README now names the current longbench/ directory. This documentation-only correction has no runtime or deployment impact and is ready to merge.

Suggested reviewers: bowenfu

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies a documentation fix and accurately states the directory rename from sparse_attention to longbench.
Description check	✅ Passed	The description explains the documentation issue, the correction, and the verification steps. It does not include the template's explicit checklist, but it provides the required substantive informatio…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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