*-F, --format* '[json|text]'::

Set the output format for stdout. Defaults to "text".
*-F, --format* '[json|text|unix]'::

Set the output format for stdout. Defaults to "text".
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*TEXT* output is human-friendly textual output, usually in table or
record-oriented format.
In some cases, *TEXT* format is intentionally kept simple to support naive use
of commands within a subshell, but it is not generally guaranteed to be
parseable.
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*JSON* output will produce raw JSON data from underlying Globus services.
This data is useful for using the CLI as part of a programmatic process, or for
deciding on valid *--jmespath* queries.
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*UNIX* output will produce a line-by-line serialization of the result data
(which would be visible with *JSON*).
This is very suitable for use in pipelines with `grep`, `sort`, and other
standard unix tools.
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Whenever you request *--format=UNIX*, you should also be using a *--jmespath*
query to select the exact fields that you want.
This better guarantees the consistency of output contents and ordering.

Update format docs to cover the UNIX format
Update format docs to cover the UNIX format

Sections for each output format with basic description. Include mention
of UNIX and recommend using `--jmespath` with it.
