docs(README): update licensing information and improve clarity

- Remove specific licensing details and trial options from this package's README
- Add a reference to the main toolkit page for comprehensive licensing information
- Clarify that this package is part of the Flutter News App Full Source Code Toolkit
- Improve readability and focus on getting started instructions

Author: fulleni

README.md

@@ -98,18 +98,10 @@ Click on any category to explore.
 
 </details>
 
-## 🔑 License: Source-Available with a Free Trial
-
-Get started for free and purchase when you're ready to launch!
-
-- **TRY IT:** Download and explore the full source code under the PolyForm Free Trial [license](LICENSE). Perfect for evaluation.
-- **BUY IT:** One-time payment for a lifetime license to publish unlimited commercial apps.
-- **GET YOURS:** [**Purchase via GitHub Sponsors**](https://github.com/sponsors/flutter-news-app-full-source-code).
-
-> A single purchase provides a commercial license for every repository within the [Flutter News App Full Source Code Toolkit](https://github.com/flutter-news-app-full-source-code). No other purchases are needed.
+## 🔑 Licensing
+This `Flutter News App API Server` package is an integral part of the [**Flutter News App Full Source Code Toolkit**](https://github.com/flutter-news-app-full-source-code). For comprehensive details regarding licensing, including trial and commercial options for the entire toolkit, please refer to the main toolkit organization page.
 
 ## 🚀 Getting Started & Running Locally
-
 For a complete guide on setting up your local environment, running the server, and understanding the configuration, please see the **[Local Setup Guide](https://flutter-news-app-full-source-code.github.io/docs/api-server/local-setup/)** in our official documentation.
 
 Our documentation provides a detailed, step-by-step walkthrough to get you up and running smoothly.