docs: next lint post 15.5 release adjustments (#82933)
Update installation guide, now we have Biome as an option to
create-next-app, and next lint is deprecated.
Also addresses: https://github.com/vercel/next.js/issues/82916
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Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>
Co-authored-by: Ben Gubler <nebrelbug@gmail.com>
