Clarify help text for append-image-name-suffix

[natalieparellano]

Summary

Output

Before

After

Documentation

• Should this change be documented?
  • Yes, see #___
  • No

Related

Resolves #___

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.86%. Comparing base (bf1bd85) to head (1e0a1d9).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2358   +/-   ##
=======================================
  Coverage   69.86%   69.86%           
=======================================
  Files         254      254           
  Lines       18873    18873           
=======================================
  Hits        13184    13184           
  Misses       4795     4795           
  Partials      894      894           

Flag	Coverage Δ
os_linux	69.00% <100.00%> (ø)
os_macos-arm64	65.24% <100.00%> (ø)
os_windows	69.38% <100.00%> (ø)
unit	69.86% <100.00%> (ø)

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