Docs: clarify that .browserslistrc is a shipped file, not a package.json metadata field

Author: julien-deramond

site/src/content/docs/getting-started/install.mdx

@@ -43,7 +43,8 @@ Bootstrap’s `package.json` contains some additional metadata under the followi
 
 - `sass` - path to Bootstrap’s main [Sass](https://sass-lang.com/) source file
 - `style` - path to Bootstrap’s non-minified CSS that’s been compiled using the default settings (no customization)
-- `.browserslistrc` - shipped at the package root for Browserslist/Autoprefixer browser targets
+
+Additionally, Bootstrap ships a `.browserslistrc` file at the package root, which defines browser targets for tools like Browserslist and Autoprefixer.
 
 ### Using Yarn