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

backport #26739

docs/content/development/api-usage.en-us.md

@@ -21,7 +21,7 @@ menu:
 
 By default, `ENABLE_SWAGGER` is true, and
 `MAX_RESPONSE_ITEMS` is set to 50. See [Config Cheat
-Sheet](https://docs.gitea.io/en-us/config-cheat-sheet/) for more
+Sheet](administration/config-cheat-sheet.md) for more
 information.
 
 ## Authentication
@@ -76,7 +76,7 @@ interface: `Settings | Applications | Generate New Token`.
 
 ## OAuth2 Provider
 
-Access tokens obtained from Gitea's [OAuth2 provider](https://docs.gitea.io/en-us/oauth2-provider) are accepted by these methods:
+Access tokens obtained from Gitea's [OAuth2 provider](development/oauth2-provider.md) are accepted by these methods:
 
 - `Authorization bearer ...` header in HTTP headers
 - `token=...` parameter in URL query string

docs/content/development/api-usage.zh-cn.md

@@ -20,7 +20,7 @@ menu:
 ## 开启/配置 API 访问
 
 通常情况下， `ENABLE_SWAGGER` 默认开启并且参数 `MAX_RESPONSE_ITEMS` 默认为 50。您可以从 [Config Cheat
-Sheet](https://docs.gitea.io/en-us/config-cheat-sheet/) 中获取更多配置相关信息。
+Sheet](administration/config-cheat-sheet.md) 中获取更多配置相关信息。
 
 ## 通过 API 认证
 

docs/content/development/oauth2-provider.en-us.md

@@ -137,7 +137,7 @@ For public clients, a redirect URI of a loopback IP address such as `http://127.
 
    The `REDIRECT_URI` in the `access_token` request must match the `REDIRECT_URI` in the `authorize` request.
 
-3. Use the `access_token` to make [API requests](https://docs.gitea.io/en-us/api-usage#oauth2) to access the user's resources.
+3. Use the `access_token` to make [API requests](development/api-usage.md#oauth2-provider) to access the user's resources.
 
 ### Public client (PKCE)
 
@@ -199,4 +199,4 @@ After you have generated this values, you can continue with your request.
 
    The `REDIRECT_URI` in the `access_token` request must match the `REDIRECT_URI` in the `authorize` request.
 
-3. Use the `access_token` to make [API requests](https://docs.gitea.io/en-us/api-usage#oauth2) to access the user's resources.
+3. Use the `access_token` to make [API requests](development/api-usage.md#oauth2-provider) to access the user's resources.

docs/content/development/oauth2-provider.zh-cn.md

@@ -134,4 +134,4 @@ Gitea 支持私密和公共客户端类型，[参见 RFC 6749](https://datatrack
 
    `access_token` 请求中的 `REDIRECT_URI` 必须与 `authorize` 请求中的 `REDIRECT_URI` 相符。
 
-3. 使用 `access_token` 来构造 [API 请求](https://docs.gitea.io/en-us/api-usage#oauth2) 以读写用户的资源。
+3. 使用 `access_token` 来构造 [API 请求](development/api-usage.md#oauth2-provider) 以读写用户的资源。

docs/content/development/oauth2-provider.zh-tw.md

@@ -93,4 +93,4 @@ Gitea 支援作為 OAuth2 提供者，能讓第三方程式能在使用者同意
 
    `access_token` 請求中的 `REDIRECT_URI` 必須符合 `authorize` 請求中的 `REDIRECT_URI`。
 
-1. 發送 [API requests](https://docs.gitea.io/en-us/api-usage#oauth2) 時使用 `access_token` 以存取使用者的資源。
+1. 發送 [API requests](development/api-usage.md#oauth2-provider) 時使用 `access_token` 以存取使用者的資源。