[Docs/Website] Modify the "how to contribute section"

[andreagreggo2]

Description

Update the how to contribute with how to add secrets

Affected Areas

Check all that apply:

• [X ] Documentation files (docs/)
• Website content (website/)
• Both

Proposed Changes

Additional Context

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Contribution Checklist

• [X ] I have read the CONTRIBUTING.md guide
• [X ] I have checked existing documentation for similar content
• [ X] I have provided clear and specific details about the requested changes