Update dandi [--help] printout on README.md

[candleindark]

This PR brings the printout from dandi [--help] up-to-date

[Copilot]

Pull Request Overview

This PR updates the README.md file to reflect the current output of the dandi --help command, ensuring the documentation accurately represents the CLI's current state.

Key Changes:

• Updated command descriptions to use plural forms where appropriate
• Added new commands that have been introduced to the CLI
• Minor text adjustments for consistency

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.81%. Comparing base (5c86d03) to head (b5a9ccc).
⚠️ Report is 121 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1699      +/-   ##
==========================================
- Coverage   74.82%   74.81%   -0.01%     
==========================================
  Files          84       84              
  Lines       11693    11693              
==========================================
- Hits         8749     8748       -1     
- Misses       2944     2945       +1     

Flag	Coverage Δ
unittests	74.81% <ø> (-0.01%)	⬇️

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[yarikoptic]

Thank you!

Ideally, may be, we should make CI to do it... @asmacdo does smth like that in https://github.com/con/duct/blob/main/.github/workflows/readme-updated.yaml

[candleindark]

Thank you!

Ideally, may be, we should make CI to do it... @asmacdo does smth like that in https://github.com/con/duct/blob/main/.github/workflows/readme-updated.yaml

I need to take a closer look. Tests are unexpectedly failing.

[yarikoptic]

@candleindark ping on this - could you bring this over the finish line?

[candleindark]

@yarikoptic I think this is OK to be merged now. The remaining test failure is unrelated to this PR as it appeared at https://github.com/dandi/dandi-cli/actions/runs/18254798625/job/51974612079 as well.

[candleindark]

@yarikoptic The remaining test passed. It was very slow and sometimes triggered a timeout.

[github-actions]

🚀 PR was released in 0.72.0 🚀