Update contributors.json: Massas

[Massas]

Issue

Description

add myself: Massas

Checklist

• [✓] Added contributor object in ascending order in contributors.json
• [] Github action build passing
• [✓] No merge conflicts

[github-actions]

Thanks for contributing to developer-community-stats!
We are happy to have you as a contributor. Your PR will be reviewed and merged to master.
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Please share your feedback and suggestions in this Issue: Suggestions
This will help us improve a lot :)
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[Massas]

Please conduct a review.