Update documentation

[jonesbusy]

Describe your use-case which is not covered by existing documentation.

Documentation is innexistant for the plugin.

Enrich README with examples (code, screenshots etc...)

Reference any relevant documentation, other materials or issues/pull requests that can be used for inspiration.

No response

Are you interested in contributing to the documentation?

No response

[oxygenecore]

I have multimodular maven project. How do I run java migrations from one of the submodules?

[jonesbusy]

https://community.jenkins.io/

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