Document correct default behavior for HOST var (#7823)

Author: jsejcksn

docusaurus/docs/advanced-configuration.md

@@ -11,7 +11,7 @@ You can adjust various development and production settings by setting environmen
 | :---------------------- | :---------: | :--------: | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | BROWSER                 |   ✅ Used   | 🚫 Ignored | By default, Create React App will open the default system browser, favoring Chrome on macOS. Specify a [browser](https://github.com/sindresorhus/open#app) to override this behavior, or set it to `none` to disable it completely. If you need to customize the way the browser is launched, you can specify a node script instead. Any arguments passed to `npm start` will also be passed to this script, and the url where your app is served will be the last argument. Your script's file name must have the `.js` extension.                                                                                                                                      |
 | BROWSER_ARGS            |   ✅ Used   | 🚫 Ignored | When the `BROWSER` environment variable is specified, any arguments that you set to this environment variable will be passed to the browser instance. Multiple arguments are supported as a space separated list. By default, no arguments are passed through to browsers.                                                                                                                                                                                                                                                                                                                                                                                               |
-| HOST                    |   ✅ Used   | 🚫 Ignored | By default, the development web server binds to `localhost`. You may use this variable to specify a different host.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
+| HOST                    |   ✅ Used   | 🚫 Ignored | By default, the development web server binds to all hostnames on the device (`localhost`, LAN network address, etc.). You may use this variable to specify a different host.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
 | PORT                    |   ✅ Used   | 🚫 Ignored | By default, the development web server will attempt to listen on port 3000 or prompt you to attempt the next available port. You may use this variable to specify a different port.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
 | HTTPS                   |   ✅ Used   | 🚫 Ignored | When set to `true`, Create React App will run the development server in `https` mode.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
 | PUBLIC_URL              | 🚫 Ignored  |  ✅ Used   | Create React App assumes your application is hosted at the serving web server's root or a subpath as specified in [`package.json` (`homepage`)](deployment#building-for-relative-paths). Normally, Create React App ignores the hostname. You may use this variable to force assets to be referenced verbatim to the url you provide (hostname included). This may be particularly useful when using a CDN to host your application.                                                                                                                                                                                                                                     |