Minor improvement to URL Preview Block

This is a minor request because this is really not a big deal at all, but:

It would be kinda cool if the URL Preview Block gave us previews of normal websites as well.

It’s not a problem for us to open up URL’s in new browser tabs, but if the URL Preview Block supported normal websites, it could save us a little bit of web browser clutter — because we could quickly see previews right from within Airtable. :slight_smile: