[docs]: translate hertz tutorials/tutorials/service-governance/service_discovery/

[li-jin-gou]

service_discovery: zh web page：https://www.cloudwego.io/zh/docs/hertz/tutorials/service-governance/service_discovery/ zh doc：https://github.com/cloudwego/cloudwego.github.io/blob/main/content/zh/docs/hertz/tutorials/service-governance/service_discovery.md en folder：https://github.com/cloudwego/cloudwego.github.io/tree/main/content/en/docs/hertz/tutorials

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