zh-translation: /docs/setup/install/istioctl/index.md (#6275)
zh-translation: /docs/setup/install/istioctl/index.md (#6275)

* zh-translation: /docs/setup/install/istioctl/index.md

* fix reivew issue

istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io,istio/istio.io