Destructuring Doc Suggestion

This used to return a JS array of maps; one per row. Now it returns the arrow table.

```sql
sql id=top10
SELECT * FROM gaia ORDER BY phot_g_mean_mag LIMIT 10
```

Suggestion:  add something like this to the docs to make it explicit how to pull out all the rows.

```sql
sql id=[...top10]
SELECT * FROM gaia ORDER BY phot_g_mean_mag LIMIT 10
```

