change _zh-cn/index.md according to latest index.md (#2540)

* change _zh-cn/index.md according to latest index.md

* correct language line in _zh-cn/index.md

Author: benluo

_zh-cn/index.md

@@ -1,116 +1,101 @@
 ---
-layout: documentation
-title: 文档
+layout: inner-page-documentation
 language: zh-cn
-partof: documentation
+title: 学习 Scala
+namespace: root
 discourse: true
-
-# Content masthead links
+partof: documentation
 more-resources-label: 更多资源
+redirect_from:
+  - /scala3/
+  - /scala3/index.html
 
-scala3-sections:
-- title: "第一步"
-  links:
-    - title: "Scala 3 中的新东西"
-      description: "Scala 3 中令人兴奋的新特性概览"
-      icon: "fa fa-star"
-      link: /zh-cn/scala3/new-in-scala3.html
-    - title: "快速开始"
-      description: "在你的电脑中安装 Scala 3，然后开始写些 Scala 代码！"
-      icon: "fa fa-rocket"
-      link: /scala3/getting-started.html
-    - title: "Scala 3 册子"
-      description: "通过一系列小课程来学习 Scala。"
-      icon: "fa fa-book"
-      link: /scala3/book/introduction.html
-- title: "更多细节"
-  links:
-    - title: "迁移指引"
-      description: "一份帮你从 Scala 2 迁移到 Scala 3 的指引。"
-      icon: "fa fa-suitcase"
-      link: /scala3/guides/migration/compatibility-intro.html
-    - title: "导览"
-      description: "关于语言特别之处的详细导览。"
-      icon: "fa fa-map"
-      link: /zh-cn/scala3/guides.html
-    - title: "Scala 库 API"
-      description: "Scala 3 每一个版本的标准库API文档。"
-      icon: "fa fa-file-alt"
-      link: https://scala-lang.org/api/3.x/
-    - title: "语言参考手册"
-      description: "Scala 3 语言参考手册。"
-      icon: "fa fa-book"
-      link: https://docs.scala-lang.org/scala3/reference
-    - title: "贡献指南"
-      description: "Scala 3 编译器指南及如何修复问题"
-      icon: "fa fa-cogs"
-      link: /scala3/guides/contribution/contribution-intro.html
-    - title: "Scala 3 全新的 Scaladoc"
-      description: "Scaladoc 新特性重点介绍"
-      icon: "fa fa-star"
-      link: /scala3/scaladoc.html
-    - title: "演讲"
-      description: "可在线观看的关于 Scala 3 的演讲"
-      icon: "fa fa-play-circle"
-      link: /scala3/talks.html
-
-scala2-sections:
-
+sections:
   - title: "第一步..."
     links:
       - title: "快速开始"
-        description: "在电脑上安装Scala然后开始写些Scala代码吧！"
+        description: "在电脑上安装 Scala 然后开始写些 Scala 代码吧！"
         icon: "fa fa-rocket"
         link: /getting-started.html
-      - title: "Scala之旅"
+      - title: "scala之旅"
         description: "核心语言特性简介"
         icon: "fa fa-flag"
         link: /zh-cn/tour/tour-of-scala.html
-      - title: "Java程序员Scala入门"
-        description: "为具有Java背景的程序员准备的Scala简介"
-        icon: "fa fa-coffee"
-        link: /zh-cn/tutorials/scala-for-java-programmers.html
-    more-resources:
-      - title: 在线课程、练习和博客
-        url: /learn.html
+      - title: "Scala 3 册子"
+        description: "通过一系列小课程来学习 Scala。"
+        icon: "fa fa-book"
+        link: /zh-cn/scala3/book/introduction.html
+      - title: "在线课程"
+        description: "新手和有经验的程序员在 moocs 学习 Scala。"
+        icon: "fa fa-cloud"
+        link: /online-courses.html
       - title: 书籍
-        url: /books.html        
+        description: "有关 Scala 的印刷和数字化的书籍。"
+        icon: "fa fa-book"
+        link: /books.html
+      - title: 教程
+        description: "通过一系列步骤，手把手教你创建 Scala 应用。"
+        icon: "fa fa-tasks"
+        link: /tutorials.html
 
-  - title: "回归用户"      
+  - title: "回归用户"
     links:
-      - title: "API"
-        description: "各个Scala版本的API文档"
+      - title: "api"
+        description: "各个 Scala 版本的 api 文档"
         icon: "fa fa-file-alt"
         link: /api/all.html
-      - title: "总览"
-        description: "涵盖Scala各种特性的深度分析文档"
+      - title: "导引和总览"
+        description: "涵盖 Scala 各种特性的深度分析文档"
         icon: "fa fa-database"
         link: /zh-cn/overviews/index.html
       - title: "风格引导"
-        description: "深度指导如何写出地道的Scala代码"
+        description: "深度指导如何写出地道的 Scala 代码"
         icon: "fa fa-bookmark"
         link: /style/index.html
       - title: "速查"
-        description: "包含Scala基础语法的速查手册"
+        description: "包含 Scala 基础语法的速查手册"
         icon: "fa fa-list"
         link: /zh-cn/cheatsheets/index.html
-      - title: "Scala常见问题"
-        description: "Scala语言特性的常见问题及答案"
+      - title: "Scala 常见问题"
+        description: "Scala 语言特性的常见问题及答案。"
         icon: "fa fa-question-circle"
         link: /tutorials/FAQ/index.html
       - title: "语言规范"
-        description: "Scala正式语言规范"
+        description: "语言规范"
         icon: "fa fa-book"
         link: https://scala-lang.org/files/archive/spec/2.12/
+      - title: "Scala 3 语言参考"
+        description: "Scala 3 语言参考"
+        icon: "fa fa-book"
+        link: https://docs.scala-lang.org/scala3/reference
 
-  - title: "Scala进展"      
+  - title: "探索 Scala 3"
     links:
-      - title: "SIPs"
-        description: "Scala改进过程（Scala Improvement Process），语言及编译器进展"
+      - title: "迁移指引"
+        description: "一份帮你从 Scala 2 迁移到 Scala 3 的指引。"
+        icon: "fa fa-suitcase"
+        link: /scala3/guides/migration/compatibility-intro.html
+      - title: "Scala 3 中的新东西"
+        description: "Scala 3 中令人兴奋的新特性概览"
+        icon: "fa fa-star"
+        link: /zh-cn/scala3/new-in-scala3.html
+      - title: "Scala 3 全新的 Scaladoc"
+        description: "Scaladoc 新特性重点介绍"
+        icon: "fa fa-star"
+        link: /scala3/scaladoc.html
+      - title: "演讲"
+        description: "可在线观看的关于 Scala 3 的演讲"
+        icon: "fa fa-play-circle"
+        link: /scala3/talks.html
+
+  - title: "Scala 进展"
+    links:
+      - title: "Scala 改进过程"
+        description: "描述涉及语言的过程，和所有 Scala 改进提案(SIPs)的列表。"
         icon: "fa fa-cogs"
         link: /sips/index.html
-      - title: "为 Scala 作贡献"
-        description: "为 Scala 项目作贡献的完整指南"
-        icon: "fa fa-cogs"
+      - title: "成为 Scala OSS 贡献者"
+        description: "从头到尾：发现你如何帮助 Scala 开源生态系统。"
+        icon: "fa fa-code-branch"
         link: /contribute/
 ---