Improve Documentation on JSON String Format for Job Configuration

[grasmarcussanti129]

Issue

The README mentions that a job should be presented as a JSON string representation but does not provide a clear example of how to format it correctly. Clear examples are essential for users to implement the configuration accurately.

Suggested Improvement

Add a detailed example in the documentation that illustrates the expected JSON string format for different scenarios. For example:

'{ "php": "7.4", "extensions": ["mbstring", "curl"], "ini": ["memory_limit=-1"], "dependencies": "latest" }'

Benefit

This enhancement will help new users to quickly grasp how to configure their jobs, reducing the risk of misconfigurations and improving user experience.

[froschdesign]

@grasmarcussanti129
It would be great if you could create a pull request which adds one or more examples.
Thanks in advance! 👍🏻