Suggest improving hook API reference signatures

A user on Reddit pointed out that the Hooks API Reference page section for useEffect doesn't include the deps array in the signature - it's just useEffect(callback). The deps array is only described later on under the heading "Conditionally Firing an Effect".

Similarly, the entry for useLayoutEffect() doesn't even show a signature at all - it just says "the signature is identical to useEffect".

At a minimum, the useEffect signature should show that there's an optional second argument - the deps array. It would also help to show the signature for useLayoutEffect as well.

Reddit link reference: https://www.reddit.com/r/reactjs/comments/b0oh20/usedimensions_a_react_hook_to_measure_dom_nodes/eigiqud/

Hooks API Reference ページから始め、useEffect と useLayoutEffect の項目を確認します。useEffect にオプションの deps 配列が表示され、useLayoutEffect に明示的なシグネチャがあり、周囲の説明の整合性が保たれていれば、作業は完了です。