SE-0306 Actors: Make Types consistent in re-entrancy sample code

[Diggory]

I have been reading up on Actors, and think that there are some Type name errors in the sample code. Forgive me if I have misunderstood and got this wrong....

In the re-entrancy section there is some sample code showing how a value can change across awaits.

The types don't match - I suspect that at some point Person was changed to DecisionMaker but not all occurrences of the type name were changed in the sample code.

The Actor type should either be a Person or a DecisionMaker Similarly the opinion property's type should either be Judgment or 'Decision'