ch22 : correcting type assignment and methodNameSpelling on ZonedDateTime examples

[txpokey]

There's a set of related examples demonstrating that you can extract a LocalDate, LocalTime or a LocalDateTime from ZonedDateTime. But the assignments look like a copy-paste error, as they all assign to some variable of type LocalDateTime, instead of the respective types. LocalDate or LocalTime are not subtypes of LocalDateTime.

After these, a couple lines later, there's a typo on use of:
int day = now.getDayofMonth();
instead of:
int day = now.getDayOfMonth();

[txpokey]

I closed the previous pull request, corrected my mistake on parens and then issued a new PR. apologies.

[eh3rrera]

Don't worry, it's merged now, thanks a lot! 👍