Make help more accessible

[sttts]

Description of your changes

• up => full help page (like --help)
• up help => same

I have:

• [x] Read and followed Upbound's contribution process.
• [x] Run make reviewable to ensure this PR is ready for review.
• [ ] Added backport release-x.y labels to auto-backport this PR, as appropriate.

How has this code been tested

Locally.

[Upbound-CLA]

All committers have signed the CLA.

[sttts]

Who can merge this? Do I miss a permission / membership to do that?

[AlainRoy]

Stefan, I'll merge it for now, and we'll figure out where to give you permissions.