Docusaurus-ify (#26051)

This PR cleans up the docs in a way to make them simpler to ingest by
our [docs repo](https://gitea.com/gitea/gitea-docusaurus).

1. It includes all of the sed invocations our ingestion did, removing
the need to do it at build time.
2. It replaces the shortcode variable replacement method with
`@variable@` style, simply for easier sed invocations when required.
3. It removes unused files and moves the docs up a level as cleanup.

---------

Signed-off-by: jolheiser <john.olheiser@gmail.com>

docs/content/installation/windows-service.zh-cn.md

@@ -0,0 +1,36 @@
+---
+date: "2016-12-21T15:00:00-02:00"
+title: "注册为Windows服务"
+slug: "windows-service"
+sidebar_position: 50
+toc: false
+draft: false
+aliases:
+  - /zh-cn/windows-service
+menu:
+  sidebar:
+    parent: "installation"
+    name: "Windows服务"
+    sidebar_position: 50
+    identifier: "windows-service"
+---
+
+# 注册为Windows服务
+
+要注册为Windows服务，首先以Administrator身份运行 `cmd`，然后执行以下命令：
+
+```
+sc create gitea start= auto binPath= "\"C:\gitea\gitea.exe\" web --config \"C:\gitea\custom\conf\app.ini\""
+```
+
+别忘了将 `C:\gitea` 替换成你的 Gitea 安装目录。
+
+之后在控制面板打开 "Windows Services"，搜索 "gitea"，右键选择 "Run"。在浏览器打开 `http://localhost:3000` 就可以访问了。（如果你修改了端口，请访问对应的端口，3000是默认端口）。
+
+## 从Windows服务中删除
+
+以Administrator身份运行 `cmd`，然后执行以下命令：
+
+```
+sc delete gitea
+```