### What this PR does / why we need it? Update online serving tutorials for `Qwen2-Audio`. Part of https://github.com/vllm-project/vllm-ascend/issues/3508. ### Does this PR introduce _any_ user-facing change? ### How was this patch tested? - vLLM version: v0.11.0rc3 - vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0 --------- Signed-off-by: shen-shanshan <467638484@qq.com>