fixed the example in the reference page for lightFalloff()

[sudhanshuv1]

Resolves #6789

Changes:

Removed ortho() from the example in the reference page for lightFalloff(). Also changed background(0) to background(125) in the same example.

Screenshots of the change:

PR Checklist

• npm run lint passes
• Inline documentation is included / updated
• Unit tests are included / updated

[davepagurek]

Thanks for the update! The background color change makes the shapes easier to see too.

[davepagurek]

@all-contributors please add @sudhanshuv3 for code

[allcontributors]

@davepagurek

I've updated the pull request to add @sudhanshuv3! 🎉