### What this PR does / why we need it?
Add doc for Qwen3 Next
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Doc CI passed
Related: https://github.com/vllm-project/vllm-ascend/issues/2884
- vLLM version: v0.10.2
- vLLM main:
01413e0cf5
Signed-off-by: Yikun Jiang <yikunkero@gmail.com>