docs: polish FAQ wording (#6641)

Author: chenjiahan

website/docs/en/guide/faq/exceptions.mdx

@@ -1,16 +1,16 @@
 # Exceptions FAQ
 
-### Find ESNext code in the compiled files?
+### Seeing ESNext code in the compiled files?
 
-By default, Rsbuild does not compile JavaScript files under `node_modules`. If an npm package contains ESNext syntax, it will be bundled into the output.
+By default, Rsbuild does not compile JavaScript files in `node_modules`. If an npm package includes ESNext syntax, that code is bundled as is.
 
 To compile these files, use the [source.include](/config/source/include) configuration to specify additional directories or modules.
 
 ---
 
-### Build error `Error: [object Object] is not a PostCSS plugin` ?
+### Build error `Error: [object Object] is not a PostCSS plugin`?
 
-Rsbuild uses PostCSS v8. If you encounter the `Error: [object Object] is not a PostCSS plugin` error during compilation, it's usually caused by using an incompatible version of PostCSS. For example, the `postcss` peer dependency version in `cssnano` may not match the expected version.
+Rsbuild uses PostCSS v8. If you encounter this error during compilation, it's usually because a package is using an incompatible PostCSS version. For example, the `postcss` peer dependency version in `cssnano` may not match the expected version.
 
 To find unmet peer dependencies, run `npm ls postcss`. Then fix the issue by specifying the correct PostCSS version in your package.json.
 
@@ -37,13 +37,13 @@ File was processed with these loaders:
 You may need an additional loader to handle the result of these loaders.
 ```
 
-Check whether you're referencing unsupported file formats, and configure the appropriate Rspack loader to handle them.
+Check whether you're importing unsupported file formats, and configure the appropriate Rspack loader to handle them.
 
 ---
 
 ### Compilation error `export 'foo' (imported as 'foo') was not found in './utils'`?
 
-This error means your code is importing an export that doesn't exist.
+This error means your code is importing a symbol that doesn't exist.
 
 For example, in the following code, `index.ts` is importing the `foo` variable from `utils.ts`, but `utils.ts` only exports the `bar` variable.
 
@@ -88,7 +88,7 @@ export { Foo } from './utils'; // Incorrect
 export type { Foo } from './utils'; // Correct
 ```
 
-In some cases, a third-party dependency you can't modify causes this error. If you're certain the issue doesn't affect your application, you can change the log level from `error` to `warn`:
+In some cases, a third-party dependency you can't modify causes this error. If you're sure it doesn't affect your application, you can downgrade the log level from `error` to `warn`:
 
 ```ts title="rsbuild.config.ts"
 export default {

website/docs/en/guide/faq/features.mdx

@@ -1,8 +1,8 @@
 # Features FAQ
 
-### How to import UI component library on demand?
+### How to import a UI component library on demand?
 
-To configure the on-demand import of the component library, you can configure it through [source.transformImport](/config/source/transform-import), which is equivalent to [babel-plugin-import](https://npmjs.com/package/babel-plugin-import).
+To enable on-demand imports for a component library, configure [source.transformImport](/config/source/transform-import). This works the same way as [babel-plugin-import](https://npmjs.com/package/babel-plugin-import).
 
 ```ts
 export default {
@@ -22,13 +22,13 @@ export default {
 
 ### How to run ESLint during compilation?
 
-For the sake of compilation performance, Rsbuild will not perform ESLint verification during the compilation process by default. If you require this feature, you can use Rsbuild's [ESLint plugin](https://github.com/rspack-contrib/rsbuild-plugin-eslint).
+To protect compilation performance, Rsbuild doesn't run ESLint checks during builds by default. If you need ESLint in the pipeline, use the [ESLint plugin](https://github.com/rspack-contrib/rsbuild-plugin-eslint).
 
 ---
 
 ### How to configure CDN path for static assets?
 
-To upload static assets such as JS and CSS to CDN for use, set the URL prefix of static assets through the [output.assetPrefix](/config/output/asset-prefix) configuration.
+To serve static assets like JS and CSS from a CDN, set the asset URL prefix with [output.assetPrefix](/config/output/asset-prefix).
 
 ```js
 export default {
@@ -42,17 +42,17 @@ export default {
 
 ### How to remove console after production build?
 
-For the production build, we can remove the `console` from the code, so as to avoid the log of the development mode being output to the production.
+In production builds, you can strip `console` calls to avoid shipping development logs.
 
-Rsbuild provides a configuration option to remove console by default, please see [performance.removeConsole](/config/performance/remove-console).
+Rsbuild provides a built-in option for removing console statements. See [performance.removeConsole](/config/performance/remove-console).
 
 ---
 
 ### How to view the final generated Rspack configuration?
 
-By using the Rsbuild debug mode, you can view the Rspack configuration generated by Rsbuild.
+Use Rsbuild's debug mode to view the Rspack configuration that Rsbuild generates.
 
-You can enable the debug mode of Rsbuild by adding the `DEBUG=rsbuild` environment variable when performing the build. In this mode, the internally generated Rspack configuration will be outputted to the "dist" directory.
+Enable debug mode by setting the `DEBUG=rsbuild` environment variable when running a build. In this mode, the generated Rspack configuration is written to the `dist` directory.
 
 ```bash
 ➜ DEBUG=rsbuild pnpm dev
@@ -73,9 +73,9 @@ config inspection completed, generated files:
 
 ### How to ignore specific warnings?
 
-By default, Rsbuild will print all error and warning logs generated by the build process.
+By default, Rsbuild prints all errors and warnings from the build.
 
-If a large number of warning logs are generated by a third-party package and you want to ignore them, specific warning logs can be ignored through the `ignoreWarnings` configuration provided by Rspack.
+If a noisy third-party package produces many warnings, you can silence specific messages with Rspack's `ignoreWarnings` configuration.
 
 ```ts
 export default {