chore: update comment about build.target (#19047)

Author: sapphi-red

packages/vite/src/node/build.ts

@@ -78,16 +78,15 @@ import type { RollupPluginHooks } from './typeUtils'
 export interface BuildEnvironmentOptions {
   /**
    * Compatibility transform target. The transform is performed with esbuild
-   * and the lowest supported target is es2015/es6. Note this only handles
-   * syntax transformation and does not cover polyfills (except for dynamic
-   * import)
+   * and the lowest supported target is es2015. Note this only handles
+   * syntax transformation and does not cover polyfills
    *
-   * Default: 'modules' - Similar to `@babel/preset-env`'s targets.esmodules,
-   * transpile targeting browsers that natively support dynamic es module imports.
-   * https://caniuse.com/es6-module-dynamic-import
+   * Default: 'modules' - transpile targeting browsers that natively support
+   * dynamic es module imports and `import.meta`
+   * (Chrome 87+, Firefox 78+, Safari 14+, Edge 88+).
    *
    * Another special value is 'esnext' - which only performs minimal transpiling
-   * (for minification compat) and assumes native dynamic imports support.
+   * (for minification compat).
    *
    * For custom targets, see https://esbuild.github.io/api/#target and
    * https://esbuild.github.io/content-types/#javascript for more details.