Updated universal browser example readme

[matux]

Description of the change

The universal-browser example seems to work fine as is. I took the liberty of improving the README.md, and by that I mean, I asked the AI to write a more professional-looking README cause what we had screamed of sloppiness.

Copilot Summary

This pull request updates the examples/universal-browser/README.md file to improve documentation for the Universal Browser example. The changes enhance clarity and provide a more structured explanation of the example's setup, usage, and functionality.

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Maintenance
• New release

Related issues

SDK-518/make-sure-all-sdk-examples-work-properly

[Copilot]

Pull Request Overview

This pull request updates the README.md file for the Universal Browser example to provide clearer, more structured documentation. The changes transform a brief, informal description into a professional documentation format with proper sections and formatting.

• Restructured content into clear sections (Setup, Usage, How it works)
• Added proper markdown formatting with code blocks and headers
• Enhanced explanation of the example's functionality and purpose

[Copilot]

The URL path '/test' should be verified. Based on typical server setups, this might be incorrect - consider verifying the actual endpoint or providing the correct path users should visit.

Suggested change

	Visit http://localhost:3000/test to see the example in action.
	Visit http://localhost:3000/ to see the example in action. If the server is configured to use a specific endpoint, such as `/test`, ensure it is accessible.