docs(config): improve module.defaultRules documentation (#12230)

* docs(config): improve module.defaultRules documentation

* docs

Author: chenjiahan

website/docs/en/config/module.mdx

@@ -13,22 +13,44 @@ Used to decide how to handle different types of modules in a project.
 
 ## module.defaultRules
 
-- **Type:** `Rule[]`
+- **Type:** `(Rule | Falsy)[]`
+
+`defaultRules` configures the built-in module resolution and processing rules that Rspack enables by default. These rules are applied automatically to ensure that common resource types such as JavaScript, JSON, CSS, and Wasm can be correctly resolved and bundled.
 
-An array of rules applied by default for modules.
+You can extend, override, or disable these default rules to gain finer control over the build behavior.
 
-See [source code](https://github.com/web-infra-dev/rspack/blob/main/packages/rspack/src/config/defaults.ts#L381) for details.
+For example, extending the default rules:
 
 ```js title="rspack.config.mjs"
 export default {
   module: {
     defaultRules: [
-      '...', // you can use "..." to reference those rules applied by webpack by default
+      // Use "..." to reference Rspack’s default rules
+      '...',
+      // Add a custom rule
+      {
+        test: /\.foo$/,
+        use: ['foo-loader'],
+      },
     ],
   },
 };
 ```
 
+If you want to remove all of Rspack's default rules, simply omit `"..."`:
+
+```js title="rspack.config.mjs"
+export default {
+  module: {
+    defaultRules: [],
+  },
+};
+```
+
+:::tip
+See the [source code](https://github.com/web-infra-dev/rspack/blob/main/packages/rspack/src/config/defaults.ts#L453) for the full list of default rules.
+:::
+
 ## module.noParse
 
 - **Type:** `string | string[] | RegExp | RegExp[] | ((request: string) => boolean)`

website/docs/zh/config/module.mdx

@@ -15,20 +15,42 @@ import WebpackLicense from '@components/WebpackLicense';
 
 - **类型：** `(Rule | Falsy)[]`
 
-应用于模块的默认规则。
+`defaultRules` 用于配置 Rspack 在内部默认启用的模块解析与处理规则。这些规则是自动生效的，用于确保常见资源类型（如 JavaScript、JSON、CSS、Wasm 等）能够被正常解析和打包。
 
-详见[源代码](https://github.com/web-infra-dev/rspack/blob/main/packages/rspack/src/config/defaults.ts#L381)。
+你可以通过该选项扩展、覆写或禁用默认规则，从而对构建行为进行更细粒度的控制。
+
+例如，扩展默认规则：
 
 ```js title="rspack.config.mjs"
 export default {
   module: {
     defaultRules: [
-      '...', // 使用 "..." 来引用 Rspack 默认规则
+      // 你可以使用 "..." 来引用 Rspack 默认的规则
+      '...',
+      // 增加一个自定义规则
+      {
+        test: /\.foo$/,
+        use: ['foo-loader'],
+      },
     ],
   },
 };
 ```
 
+如果你希望移除 Rspack 所有的默认规则，你可以省略 `"..."`：
+
+```js title="rspack.config.mjs"
+export default {
+  module: {
+    defaultRules: [],
+  },
+};
+```
+
+:::tip
+查看 [源代码](https://github.com/web-infra-dev/rspack/blob/main/packages/rspack/src/config/defaults.ts#L453) 了解所有的默认规则。
+:::
+
 ## module.noParse
 
 - **类型：** `string | string[] | RegExp | RegExp[] | ((request: string) => boolean)`