Update x/examples/outline-pwa/README.md

Co-authored-by: Vinicius Fortuna <[email protected]>

x/examples/outline-pwa/README.md

@@ -6,7 +6,7 @@ This code lab guides you through creating a censorship-resistant Android/iOS app
 
 * An existing PWA
 * Make sure your development environment is set up with the following. [You can also follow CapacitorJS's environment setup guide](https://capacitorjs.com/docs/getting-started/environment-setup)
-  * [Node.js](https://nodejs.org/en/)
+  * [Node.js](https://nodejs.org/en/), for the Capacitor build system.
   * [GoLang](https://go.dev/), to build the Outline Mobile Proxy.
   * For Android, [OpenJDK 17](https://stackoverflow.com/a/70649641) and [Android Studio](https://developer.android.com/studio/)
   * For iOS, [XCode](https://developer.apple.com/xcode/) and [cocoapods](https://cocoapods.org/)