docs: update example app README for clarity and structure

Author: deandreamatias

README.md

@@ -4,7 +4,7 @@ Additional form inputs fields with Cupertino style for [flutter_form_builder](ht
 
 [![Pub Version](https://img.shields.io/pub/v/form_builder_cupertino_fields?logo=flutter&style=for-the-badge)](https://pub.dev/packages/form_builder_cupertino_fields)
 [![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/flutter-form-builder-ecosystem/form_builder_cupertino_fields/base.yaml?branch=main&logo=github&style=for-the-badge)](https://github.com/flutter-form-builder-ecosystem/form_builder_cupertino_fields/actions/workflows/base.yaml)
-[![Codecov](https://img.shields.io/codecov/c/github/flutter-form-builder-ecosystem/form_builder_cupertino_fields?logo=codecov&style=for-the-badge)](https://codecov.io/gh/flutter-form-builder-ecosystem/form_builder_cupertino_fields/)
+[![Codecov](https://img.shields.io/codecov/c/github/flutter-form-builder-ecosystem/form_builder_cupertino_fields?logo=codecov&style=for-the-badge)](https://app.codecov.io/gh/flutter-form-builder-ecosystem/form_builder_cupertino_fields)
 [![CodeFactor Grade](https://img.shields.io/codefactor/grade/github/flutter-form-builder-ecosystem/form_builder_cupertino_fields?logo=codefactor&style=for-the-badge)](https://www.codefactor.io/repository/github/flutter-form-builder-ecosystem/form_builder_cupertino_fields)
 
 ---

example/README.md

@@ -1,16 +1,24 @@
-# example
+# Example app
 
-A new Flutter project.
+This Flutter app demonstrates the widgets provided by the
+`form_builder_cupertino_fields` package.
 
-## Getting Started
+## Run locally
 
-This project is a starting point for a Flutter application.
+1. Install Flutter 3.32.0+ and Dart 3.8.0+.
+2. From this folder, get dependencies:
 
-A few resources to get you started if this is your first Flutter project:
+	```bash
+	flutter pub get
+	```
 
-- [Lab: Write your first Flutter app](https://docs.flutter.dev/get-started/codelab)
-- [Cookbook: Useful Flutter samples](https://docs.flutter.dev/cookbook)
+3. Run on a device or emulator:
 
-For help getting started with Flutter development, view the
-[online documentation](https://docs.flutter.dev/), which offers tutorials,
-samples, guidance on mobile development, and a full API reference.
+	```bash
+	flutter run
+	```
+
+## Notes
+
+- The app is intended as a minimal showcase.
+- For package usage, see the repository root README.