Rob Wells 71aacf5032
Adjust examples in date commands (#12055)
Hello! This is my first PR to nushell, as I was looking at things for
#5066. The usage text for the date commands seemed fine to me, so this
is just a bit of a tidy up of the examples, mostly the description text.

# Description

- Remove two incorrect examples for `date to-record` and `date to-table`
where nothing was piped in (which causes an error in actual use).

- Fix misleading descriptions in `date to-timezone` which erroneously
referred to Hawaii's time zone.

- Standardise on "time zone" in written descriptions.

- Generally tidy up example descriptions and improve consistency.

# User-Facing Changes

Only in related help text showing examples.
2024-03-03 15:10:50 -06:00
..