[Doc]: Update the vllm quantization support for the AMD GPU

[haic0]

📚 The doc issue

HI vllm team,
Could you please check and update the following quantization support for the AMD GPU, thanks so much!
Doc link:
https://docs.vllm.ai/en/latest/features/quantization/supported_hardware.html
And the test report attached, FYI.

Support Matrix
Based on the test record, the current support status of AMD GPU:

Test report :

vllm-Quantization-Test-Report.pdf

Suggest a potential alternative/fix

No response

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