Add help text or info about the triggers in the action page

[wzulfikar]

In the action page, it wasn't clear to me that all events must exist in the "Run on triggers" and "Exclude contacts with triggers" to satisfy the condition. My first thought was "I put multiple events in these options, and if any of the event is triggered, it'll satisfy the run/exclude logic".

I was wrong, because ALL events must be triggered. I tried checking the docs for any hint of this behavior, the one I found here (https://docs.useplunk.com/guides/setting-up-automation) doesn't give me any hint. Or maybe the plural form of "triggers" is the hint :D

WDYT about adding a help text or a tooltip, saying that all events must exist to satisfy the condition? I might be able to submit PR if desired.

[driaug]

Closing this in preparation of next branch.