Use docs.gitea.com instead of docs.gitea.io (#26769)

backport #26739

docs/content/administration/customizing-gitea.en-us.md

@@ -36,7 +36,7 @@ Application settings can be found in file `CustomConf` which is by default,
 Again `gitea help` will allow you review this variable and you can override it using the
 `--config` option on the `gitea` binary.
 
-- [Quick Cheat Sheet](https://docs.gitea.io/en-us/config-cheat-sheet/)
+- [Quick Cheat Sheet](administration/config-cheat-sheet.md)
 - [Complete List](https://github.com/go-gitea/gitea/blob/main/custom/conf/app.example.ini)
 
 If the `CustomPath` folder can't be found despite checking `gitea help`, check the `GITEA_CUSTOM`
@@ -44,7 +44,7 @@ environment variable; this can be used to override the default path to something
 `GITEA_CUSTOM` might, for example, be set by an init script. You can check whether the value
 is set under the "Configuration" tab on the site administration page.
 
-- [List of Environment Variables](https://docs.gitea.io/en-us/environment-variables/)
+- [List of Environment Variables](administration/environment-variables.md)
 
 **Note:** Gitea must perform a full restart to see configuration changes.
 
@@ -79,7 +79,7 @@ for C++ repositories, we want to replace `options/gitignore/C++`. To do this, a
 must be placed in `$GITEA_CUSTOM/options/gitignore/C++` (see about the location of the `CustomPath`
 directory at the top of this document).
 
-Every single page of Gitea can be changed. Dynamic content is generated using [go templates](https://golang.org/pkg/html/template/),
+Every single page of Gitea can be changed. Dynamic content is generated using [go templates](https://pkg.go.dev/html/template),
 which can be modified by placing replacements below the `$GITEA_CUSTOM/templates` directory.
 
 To obtain any embedded file (including templates), the [`gitea embedded` tool](administration/cmd-embedded.md) can be used. Alternatively, they can be found in the [`templates`](https://github.com/go-gitea/gitea/tree/main/templates) directory of Gitea source (Note: the example link is from the `main` branch. Make sure to use templates compatible with the release you are using).
@@ -103,7 +103,7 @@ just place it under your "$GITEA_CUSTOM/public/" directory (for instance `$GITEA
 To match the current style, the link should have the class name "item", and you can use `{{AppSubUrl}}` to get the base URL:
 `<a class="item" href="{{AppSubUrl}}/assets/impressum.html">Impressum</a>`
 
-For more information, see [Adding Legal Pages](https://docs.gitea.io/en-us/adding-legal-pages).
+For more information, see [Adding Legal Pages](administration/adding-legal-pages.md).
 
 You can add new tabs in the same way, putting them in `extra_tabs.tmpl`.
 The exact HTML needed to match the style of other tabs is in the file
@@ -355,10 +355,10 @@ A full list of supported emoji's is at [emoji list](https://gitea.com/gitea/gite
 ## Customizing the look of Gitea
 
 The default built-in themes are `gitea` (light), `arc-green` (dark), and `auto` (chooses light or dark depending on operating system settings).
-The default theme can be changed via `DEFAULT_THEME` in the [ui](https://docs.gitea.io/en-us/config-cheat-sheet/#ui-ui) section of `app.ini`.
+The default theme can be changed via `DEFAULT_THEME` in the [ui](administration/config-cheat-sheet.md#ui-ui) section of `app.ini`.
 
 Gitea also has support for user themes, which means every user can select which theme should be used.
-The list of themes a user can choose from can be configured with the `THEMES` value in the [ui](https://docs.gitea.io/en-us/config-cheat-sheet/#ui-ui) section of `app.ini`.
+The list of themes a user can choose from can be configured with the `THEMES` value in the [ui](administration/config-cheat-sheet.md#ui-ui) section of `app.ini`.
 
 To make a custom theme available to all users:
 

docs/content/administration/customizing-gitea.zh-cn.md

@@ -23,13 +23,13 @@ Gitea 引用 `custom` 目录中的自定义配置文件来覆盖配置、模板
 将会自动创建包括 `custom/` 在内的必要应用目录，应用本身的配置存放在
 `custom/conf/app.ini` 当中。在发行版中可能会以 `/etc/gitea/` 的形式为 `custom` 设置一个符号链接，查看配置详情请移步：
 
-- [快速备忘单](https://docs.gitea.io/en-us/config-cheat-sheet/)
+- [快速备忘单](administration/config-cheat-sheet.md)
 - [完整配置清单](https://github.com/go-gitea/gitea/blob/main/custom/conf/app.example.ini)
 
 如果您在 binary 同目录下无法找到 `custom` 文件夹，请检查您的 `GITEA_CUSTOM`
 环境变量配置， 因为它可能被配置到了其他地方（可能被一些启动脚本设置指定了目录）。
 
-- [环境变量清单](https://docs.gitea.io/en-us/specific-variables/)
+- [环境变量清单](administration/environment-variables.md)
 
 **注：** 必须完全重启 Gitea 以使配置生效。
 
@@ -87,4 +87,4 @@ Gitea 引用 `custom` 目录中的自定义配置文件来覆盖配置、模板
 ## 更改 Gitea 外观
 
 Gitea 目前由两种内置主题，分别为默认 `gitea` 主题和深色主题 `arc-green`，您可以通过修改
-`app.ini` [ui](https://docs.gitea.io/en-us/config-cheat-sheet/#ui-ui) 部分的 `DEFAULT_THEME` 的值来变更至一个可用的 Gitea 外观。
+`app.ini` [ui](administration/config-cheat-sheet.md#ui-ui) 部分的 `DEFAULT_THEME` 的值来变更至一个可用的 Gitea 外观。

docs/content/administration/fail2ban-setup.en-us.md

@@ -119,7 +119,7 @@ proxy_set_header X-Real-IP $remote_addr;
 
 The security options in `app.ini` need to be adjusted to allow the interpretation of the headers
 as well as the list of IP addresses and networks that describe trusted proxy servers
-(See the [configuration cheat sheet](https://docs.gitea.io/en-us/config-cheat-sheet/#security-security) for more information).
+(See the [configuration cheat sheet](administration/config-cheat-sheet.md#security-security) for more information).
 
 ```
 REVERSE_PROXY_LIMIT = 1

docs/content/administration/fail2ban-setup.zh-cn.md

@@ -91,4 +91,4 @@ REVERSE_PROXY_TRUSTED_PROXIES = 127.0.0.0/8,::1/128
 `REVERSE_PROXY_LIMIT` 限制反向代理服务器的层数，设置为 `0` 表示不使用这些标头。
 `REVERSE_PROXY_TRUSTED_PROXIES` 表示受信任的反向代理服务器网络地址，
 经过该网络地址转发来的流量会经过解析 `X-Real-IP` 头部得到真实客户端地址。
-（参考 [configuration cheat sheet](https://docs.gitea.io/en-us/config-cheat-sheet/#security-security)）
+（参考 [configuration cheat sheet](administration/config-cheat-sheet.md#security-security)）

docs/content/administration/mail-templates.en-us.md

@@ -18,7 +18,7 @@ menu:
 # Mail templates
 
 To craft the e-mail subject and contents for certain operations, Gitea can be customized by using templates. The templates
-for these functions are located under the [`custom` directory](https://docs.gitea.io/en-us/customizing-gitea/).
+for these functions are located under the [`custom` directory](administration/customizing-gitea.md).
 Gitea has an internal template that serves as default in case there's no custom alternative.
 
 Custom templates are loaded when Gitea starts. Changes made to them are not recognized until Gitea is restarted again.
@@ -165,7 +165,7 @@ If the template fails to render, it will be noticed only at the moment the mail
 A default subject is used if the subject template fails, and whatever was rendered successfully
 from the the _mail body_ is used, disregarding the rest.
 
-Please check [Gitea's logs](https://docs.gitea.io/en-us/logging-configuration/) for error messages in case of trouble.
+Please check [Gitea's logs](administration/logging-config.md) for error messages in case of trouble.
 
 ## Example
 

docs/content/administration/mail-templates.zh-cn.md

@@ -17,7 +17,7 @@ menu:
 
 # 邮件模板
 
-为了定制特定操作的电子邮件主题和内容，可以使用模板来自定义 Gitea。这些功能的模板位于 [`custom` 目录](https://docs.gitea.io/en-us/customizing-gitea/) 下。
+为了定制特定操作的电子邮件主题和内容，可以使用模板来自定义 Gitea。这些功能的模板位于 [`custom` 目录](administration/customizing-gitea.md) 下。
 如果没有自定义的替代方案，Gitea 将使用内部模板作为默认模板。
 
 自定义模板在 Gitea 启动时加载。对它们的更改在 Gitea 重新启动之前不会被识别。
@@ -148,7 +148,7 @@ _主题_ 和 _邮件正文_ 由 [Golang的模板引擎](https://golang.org/pkg/t
 如果模板无法呈现，则只有在发送邮件时才会注意到。
 如果主题模板失败，将使用默认主题，如果从 _邮件正文_ 中成功呈现了任何内容，则将使用该内容，忽略其他内容。
 
-如果遇到问题，请检查 [Gitea的日志](https://docs.gitea.io/en-us/logging-configuration/) 以获取错误消息。
+如果遇到问题，请检查 [Gitea的日志](administration/logging-config.md) 以获取错误消息。
 
 ## 示例
 

docs/content/administration/repo-indexer.en-us.md

@@ -19,7 +19,7 @@ menu:
 
 ## Setting up the repository indexer
 
-Gitea can search through the files of the repositories by enabling this function in your [`app.ini`](https://docs.gitea.io/en-us/config-cheat-sheet/):
+Gitea can search through the files of the repositories by enabling this function in your [`app.ini`](administration/config-cheat-sheet.md):
 
 ```ini
 [indexer]

docs/content/administration/repo-indexer.zh-cn.md

@@ -19,7 +19,7 @@ menu:
 
 ## 设置仓库索引器
 
-通过在您的 [`app.ini`](https://docs.gitea.io/en-us/config-cheat-sheet/) 中启用此功能，Gitea 可以通过仓库的文件进行搜索：
+通过在您的 [`app.ini`](administration/config-cheat-sheet.md) 中启用此功能，Gitea 可以通过仓库的文件进行搜索：
 
 ```ini
 [indexer]