feat(web): additional props for searchbox

[SavvyShah]

Add documentation for new features added to searchbox

• Focus shortcut icon inside the searchbox
• Suggestion footer at the bottom of the suggestions box

[vercel[bot]]

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Name	Status	Preview	Comments	Updated
docs	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Feb 21, 2023 at 5:00AM (UTC)
docs-appbase	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Feb 21, 2023 at 5:00AM (UTC)