Request help: add etcd retry in hertz etcd doc

[chaoranz758]

Is your feature request related to a problem? Please describe.

No

Describe the solution you'd like

Add docs for etcd retry. Related pr: hertz-contrib/registry#91.

Describe alternatives you've considered

Add docs under https://www.cloudwego.io/zh/docs/hertz/tutorials/service-governance/service_discovery/etcd/ both in EN & CH.

Additional context

Add any other context or screenshots about the feature request here.

Related reference:
https://github.com/hertz-contrib/registry/tree/main/etcd#retry
https://github.com/hertz-contrib/registry/tree/main/etcd/example/server/retry

[Claude-Zq]

I want to work on this

[Claude-Zq]

[chaoranz758]

sry, i correct it.