Fix bad usages of key

[matthewyu01]

See https://stackoverflow.com/a/43892905/13112250

Change the use of indices for key to something unique where order will change (altho I think every .map is for a fixed array that won't change)

Fix

woof/pages/[id]/index.tsx

Lines 38 to 54 in 55fa8c6

	<div key={article._id} className="card">
	<Box title={article.title} innerText="">
	<Markdown className="prose">{article.content}</Markdown>
	</Box>
	<div className="main-content">
	<div className="btn-container">
	<Link href={`/${article._id}/edit`}>
	<button className="btn edit">Edit</button>
	</Link>
	<button className="btn delete" onClick={handleDelete}>
	Delete
	</button>
	</div>
	</div>
	{message && <p>{message}</p>}
	</div>
	<div key={article._id} className="card">

and any other places