[i18n-Chinese] Translating perf_infer_gpu_multi.md to Chinese

[HMJ0628]

I noticed that no one has translated docs/source/en/perf_infer_gpu_multi.md before. Could I translate this to Chinese?

[stevhliu]

Yes, please feel free to! In the future, you can coordinate your translation efforts in #26803 instead of opening a new issue :)