[Doc][Release] Prepare v0.18.0rc1 release state#7638

yiz-liu wants to merge 1 commit intovllm-project:mainvllm-project/vllm-ascend:mainfrom

yiz-liu:release/v0.18.0rc1-prepyiz-liu/vllm-ascend:release/v0.18.0rc1-prepCopy head branch name to clipboard