CLI-1342: [push:artifact] improve docs

[danepowell]

Motivation

Fixes CLI-1342

Proposed changes

Alternatives considered

Testing steps

1. Follow the contribution guide to set up your development environment or download a pre-built acli.phar for this PR.
2. Clear the kernel cache to pick up new and changed commands: ./bin/acli ckc
3. (add specific steps for this pr)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.76%. Comparing base (2d7f692) to head (ce7f6b4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1819   +/-   ##
=========================================
  Coverage     92.76%   92.76%           
  Complexity     1822     1822           
=========================================
  Files           122      122           
  Lines          6912     6913    +1     
=========================================
+ Hits           6412     6413    +1     
  Misses          500      500           

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[github-actions]

Try the dev build for this PR: https://acquia-cli.s3.amazonaws.com/build/pr/1819/acli.phar

curl -OL https://acquia-cli.s3.amazonaws.com/build/pr/1819/acli.phar
chmod +x acli.phar