docs: Fix news entry for `sidebar()` change #2843

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1 error and 4 warnings

No such keg: /opt/homebrew/Cellar/r

pkg-config 0.29.2_3 is already installed and up-to-date. To reinstall 0.29.2_3, run: brew reinstall pkg-config

HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK is set: not checking for outdated dependents or dependents with broken linkage!

macOS's Gatekeeper has been disabled for this Cask

cairo 1.18.0 is already installed and up-to-date. To reinstall 1.18.0, run: brew reinstall cairo