arrow

ARROW-14931: [Python] csv/orc format strings missing from some dataset docs

Closes #11814 from westonpace/bugfix/ARROW-14931--format-str-in-python-dataset-docs

Authored-by: Weston Pace <weston.pace@gmail.com>
Signed-off-by: Weston Pace <weston.pace@gmail.com>