[Doc] add qwen3 reranker tutorial

[Jeaniowang]

What this PR does / why we need it?

[Doc] add qwen3 reranker tutorial

Does this PR introduce any user-facing change?

How was this patch tested?

• vLLM version: v0.11.0
• vLLM main: vllm-project/vllm@2918c1b

[github-actions]

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[gemini-code-assist]

Code Review

This pull request adds a new tutorial for running the Qwen3-Reranker model on a single NPU using vLLM Ascend. The documentation is comprehensive, covering both online and offline inference. My review focuses on ensuring the correctness and clarity of the provided examples. I've identified a few issues in the example code and its corresponding output that could confuse users or prevent the code from running. Specifically, there's an error in how scores are extracted in the offline script, the example output for the offline script is incorrect, and the reference link at the end of the document is broken. Addressing these points will significantly improve the quality and usability of this tutorial.

[wangxiyuan]

update https://github.com/vllm-project/vllm-ascend/blob/main/docs/source/tutorials/index.md as well

[wangxiyuan]

please follow the doc format, take example: https://docs.vllm.ai/projects/ascend/en/latest/tutorials/DeepSeek-V3.2-Exp.html

Thanks

[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.