ChronoUnit.FOREVER javadoc talks about era

[Bernd Eckenfels]

It might be intentional or a copy+paste thing, the javadoc of FOREVER
reads:

"...  The estimated duration of the era is artificially defined as the
largest duration supported by Duration."

Since this fragment of the sentence is also describing ERA i suspect
its a copy+paste problem, it can be reworded in:

 The estimated duration of this unit is artificially defined as the
 largest duration supported by @{link Duration}.

Greetings
Bernd