docs: update AI skill data output docs

Author: yifancong

packages/document/docs/en/guide/start/ai.mdx

@@ -18,6 +18,21 @@ In the [rstackjs/agent-skills](https://github.com/rstackjs/agent-skills) reposit
 
 - [rsdoctor-analysis](https://github.com/rstackjs/agent-skills#rsdoctor-skills): Use Rsdoctor for build analysis and provide optimization recommendations.
 
+The `rsdoctor-analysis` skill analyzes the data in `rsdoctor-data.json`. You can generate this file by setting `output.mode` to `'brief'` and `output.options.type` to `['json']`:
+
+```js
+new RsdoctorRspackPlugin({
+  output: {
+    mode: 'brief',
+    options: {
+      type: ['json'],
+    },
+  },
+});
+```
+
+You can also set the `RSDOCTOR_OUTPUT='json'` environment variable to output the analysis data as a JSON file. This environment configuration requires `@rsdoctor/*-plugin` version `>= 1.5.11`.
+
 In Coding Agents that support skills, you can use the [skills](https://www.npmjs.com/package/skills) package to install a specific skill with the following command:
 
 <PackageManagerTabs

packages/document/docs/zh/guide/start/ai.mdx

@@ -18,6 +18,21 @@ Agent Skills 是可安装到 Agent 中的领域知识包，能够让 Agent 在
 
 - [rsdoctor-analysis](https://github.com/rstackjs/agent-skills#rsdoctor-skills)：使用 Rsdoctor 进行构建分析并提供优化建议。
 
+`rsdoctor-analysis` Skill 分析的是 `rsdoctor-data.json` 中的数据。你可以通过将 `output.mode` 设置为 `'brief'`，并将 `output.options.type` 设置为 `['json']` 来生成该文件：
+
+```js
+new RsdoctorRspackPlugin({
+  output: {
+    mode: 'brief',
+    options: {
+      type: ['json'],
+    },
+  },
+});
+```
+
+也可以通过设置 `RSDOCTOR_OUTPUT='json'` 环境变量，将分析数据输出为 JSON 文件。这个环境配置需要 `@rsdoctor/*-plugin` `>= 1.5.11`。
+
 在支持 Skills 的 Coding Agent 中，可以通过以下命令使用 [skills](https://www.npmjs.com/package/skills) 包安装指定的 Skill：
 
 <PackageManagerTabs