docs(color): use proper spelling

[vil02]

Prerequisites

• I have read and understood the contributing guide.
• The commit message follows the conventional commits guidelines.
• Tests for the changes have been added (for bug fixes / features). (not relevant)
• Docs have been added/updated (for bug fixes / features).

Description

This PR fixes some typos in ./src/color, i.e.:

• backgrond and backround were replaced by background,
• recusive was replaced by recursive

[JanDeDobbeleer]

@all-contributors please add @vil02 for code

This is pure magic 🪄! @holopin-bot @vil02 wizard

[holopin-bot]

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[allcontributors]

@JanDeDobbeleer

I've put up a pull request to add @vil02! 🎉