[Misc] Fix the benchmark's README and improve the error messages for the benchmark's argument checks#22654

vllm-bot merged 3 commits intovllm-project:mainvllm-project/vllm:mainfrom

tanruixiang:fix_benchmark_error_message_and_guidetanruixiang/vllm:fix_benchmark_error_message_and_guideCopy head branch name to clipboard