Fix REAMDE

[RMeli]

No description provided.

[Copilot]

Pull Request Overview

This PR fixes parameter naming in the README documentation for the GitHub Actions first-interaction action configuration. The change corrects the parameter names from kebab-case to snake_case format.

• Updates parameter names in YAML configuration example to use proper snake_case format
• Corrects issue-message to issue_message and pr-message to pr_message

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