Change text of the popup card important warning

[pgale]

When using the popup card in a vertical stack, the following important text is displayed:

Important

To avoid misalignment with your view, place this card after all other dashboard cards. You can't trigger it from a different view.

If the content of your pop-up appears on the screen during page loading, [you can install this fix](https://github.com/Clooos/Bubble-Card#pop-up-initialization-fix) (recommended).

That confused me as it's not technically 100% correct - if you have a horizontal button card, doesn't that need to be last in the list of cards? Either way, if you have multiple popup cards, they just need to go after all VISIBLE cards I think?

So the warning would be better written as:

Important

To avoid misalignment with your view, place this card after all other visible dashboard cards. You can't trigger it from a different view.

If the content of your pop-up appears on the screen during page loading, [you can install this fix](https://github.com/Clooos/Bubble-Card#pop-up-initialization-fix) (recommended).

[Clooos]

Indeed, when I written this text, I wanted to add a note about that, but it was way too long 😅