docs: add Joel-Dandin as a contributor for code

iluwatar / java-design-patterns

Design patterns implemented in Java

https://java-design-patterns.com

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Closed allcontributors[bot] closed 3 months ago

allcontributors[bot] commented 3 months ago

Adds @Joel-Dandin as a contributor for code.

This was requested by iluwatar in this comment

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sonarcloud[bot] commented 3 months ago