fix: exit --help with code 0

[uncenter]

Fixes #80. Not sure why --help exits with an error code (1) but this just changes that to exit code 0.

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Latest commit: cdae8969fbff064a13db6baec8cadd6a5c83cc82

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Name	Status	Preview	Comments	Updated (UTC)
cmd-ts	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 11, 2023 11:47pm

[lukehmcc]

Having this fixed would be lovely