Misleading docs on force_new_deployment trigger usage

[Physium]

Description

Perhaps its worth giving more information on how force_new_deployment works. I get that its stated in the main aws provider docs on how its works but this information could also be shown within the readme itself.

e.g

force_new_deployment = true
triggers = {
    redeployment = timestamp()
  }

Also, there seem to be a huge misalignment between using timestamp() and plantimestamp(). This MR shows that it was updated but only to be reverted back with no specific reason.

Whats going on?