* Update CONTRIBUTING.md
based on AI proposals in https://github.com/wled/WLED/issues/5348
* Update CONTRIBUTING.md
official style is "GitHub"
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
* minor style updates
* styling and perfection
addressing minor recommendations by the rabbit
* cherry-picking some improvement proposals from the rabbit
* extended opening section
* section groups: Getting Started, During Review, After Approval, Coding Guidelines
* removed duplications in AI section
* improve friendly style
* minor corrections
* nitpick
* ok, some more nitpick
* Minor consistency tweak with other headings/sentences
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
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Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>