### What this PR does / why we need it?
Use ci_vllm_version when recording vllm commit
Followup on https://github.com/vllm-project/vllm-ascend/pull/1623
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
- Test mannually.
$ python3 docs/source/conf.py | jq .ci_vllm_version | tr -d '"'
v0.9.2
- Test on my local repo: https://github.com/Yikun/vllm-ascend/pull/35
- vLLM version: v0.9.1
- vLLM main:
49e8c7ea25
Signed-off-by: Yikun Jiang <yikunkero@gmail.com>