Nominate ApsarasX as vllm-ascend maintainer (#2419)

I would like to nominate Wengang Chen (@ApsarasX
https://github.com/ApsarasX) as a maintainer, starting with my +1.

## Reason
Review Quality‌: He focuses on the vLLM Ascend Core module review with
100+ high quality review, such as [#2326
(comment)](#2326 (comment)),
[#768
(comment)](#768 (comment)),
[#2312
(comment)](#2312 (comment)),
[#2268
(comment)](#2268 (comment)),
[#2192
(comment)](#2192 (comment)),
[#2156
(comment)](#2156 (comment)).
This helped vLLM Ascend v0.9.x and v0.10.x to be released with high
quality.

Sustained and Quality Contributions: He has a very good habit of sharing
his design ideas, development process, performance test results, such as
[#966](#966), he
contributed [many
PRs](https://github.com/vllm-project/vllm-ascend/pulls?q=is%3Apr+author%3AApsarasX+is%3Amerged+),
valuable bugfixes and also perf improvements.

Community Involvement: Active involved in community discussion, he is
collaborative and helps the users solve problems, involved in [120+ PR
and
issues](https://github.com/vllm-project/vllm-ascend/issues?q=commenter%3AApsarasX).
He is also the speaker of [vLLM Beijing
Meetup](https://mp.weixin.qq.com/s/7n8OYNrCC_I9SJaybHA_-Q).

So I think he's a great addition to the vLLM Ascend Maintainer team.

- ✅Review Quality‌:
108+ PR with valuable review
https://github.com/vllm-project/vllm-ascend/pulls?q=commenter%3AApsarasX
with many valuable review, like 

#2326 (comment)

#768 (comment)

#2312 (comment)

#2268 (comment)

#2192 (comment)

#2156 (comment)

- ✅ Sustained and Major Contributions
https://github.com/vllm-project/vllm-ascend/pulls/ApsarasX

- ✅ Quality Contribution‌:

https://github.com/vllm-project/vllm-ascend/pulls?q=is%3Apr+author%3AApsarasX+is%3Aclosed
Good quality with well documents
[Perf] Refactor tensor disposal logic to reduce memory usage
#966

- ✅Community Involvement‌: 
7 issue:

https://github.com/vllm-project/vllm-ascend/issues?q=is%3Aissue%20state%3Aclosed%20author%3AApsarasX

- 120+ PR and issue:

https://github.com/vllm-project/vllm-ascend/issues?q=commenter%3AApsarasX

Signed-off-by: wangxiyuan <[email protected]>

Author: wangxiyuan

docs/source/community/contributors.md

@@ -8,6 +8,7 @@
 | Yikun Jiang| [@Yikun](https://github.com/Yikun) | 2025/02 |
 | Yi Gan| [@ganyi1996ppo](https://github.com/ganyi1996ppo) | 2025/02 |
 | Shoujian Zheng| [@jianzs](https://github.com/jianzs) | 2025/06 |
+| Wengang Chen | [@ApsarasX](https://github.com/ApsarasX) | 2025/08 |
 
 ## Contributors