create chinese version doc/index.md

[hank6086]

create chinese version doc/index.md

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #373

Special notes for your reviewer:

[github-actions]

♻️ PR Preview 8b6eb63 has been successfully destroyed since this PR has been closed.

_{🤖 By surge-preview}

[qmhu]

Hi @hank6086 :

可以翻译成简体中文吗 :)

[zsnmwy]

或者可以将此PR转为支持繁体？

1. 按照以下规则，添加 zh_TW or zh_HK
   

   crane/mkdocs.yml

   Lines 29 to 55 in fde8461

   	- i18n:
   	default_language: en
   	languages:
   	en:
   	name: English
   	build: true
   	zh:
   	name: 简体中文
   	build: true
   	nav_translations:
   	zh:
   	Getting Started: 从这里开始
   	Introduction: 介绍
   	Installation: 安装
   	Tutorials: 教程
   	Effective HPA: 智能水平弹性
   	Analytics and Recommendation: 智能推荐
   	Analytics Overview: 推荐总体介绍
   	Resource Recommendation: 资源推荐
   	Replicas Recommendation: 副本数推荐
   	Proposals: 提案
   	Contributing: 贡献
   	Mirror Repo: 镜像仓库
   	Code Standard: 代码标准
   	Roadmap: 路线图
   	Overview: 概述
   	Load-aware Scheduling: 负载感知调度

2. 重命名 docs/index_ch.md 为 docs/index.zh_TW.md or docs/index.zh_HK.md

[qmhu]

/LGTM