zh-translation: faq general what does istio mean (#6145)
zh-translation: faq general what does istio mean (#6145)

* zh-translation :/faq/general/what-does-istio-mean.md

* fix review issue for zh/faq/general/what-does-istio-mean.md

* fix review issue for zh/faq/general/what-does-istio-mean.md

* fix build err

* fix review issue

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