Consider further generalizing the placeholder data

## Problem

At current the placeholder data does offer an intuitive connection that associates an Attribution Detail input field to its final output spot within a Mark.

However, it might be more clear to further generalize this information to `Author` instead of `Jane Doe`.

Or even '[Author]'.

## Description

This might provide a backwards flow of UX connection inference between the Mark and the fields, but it also might reduce clarity of how a final Mark would look.

## Alternatives

Create a "sample" area in the Marking section that includes these super generic "tokens", but leave the current less generalized placeholders for the rest of the specific Marks.

If don't right this alternative might provide gains in both directions of inference from Field to Mark, and from Mark to Field; and help with passive inference and license education.

## Additional context

## Implementation

- [x] I would be interested in implementing this feature.