docs: credit iqbal1hossain in the readme contributors list

[josephfusco]

iqbal1hossain authored #144 and #149, both shipping in 0.1.12, but was missing from the readme contributors list that renders on the WordPress.org plugin page.

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AI assistance: Yes
Tool(s): Claude Code
Model(s): Claude Opus 5
Used for: Assisting with drafting and implementation.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 29.13%. Comparing base (ddd45a5) to head (3a43079).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #189   +/-   ##
=========================================
  Coverage     29.13%   29.13%           
  Complexity      164      164           
=========================================
  Files            15       15           
  Lines          1840     1840           
=========================================
  Hits            536      536           
  Misses         1304     1304           

Flag	Coverage Δ
phpunit	29.13% <ø> (ø)

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[github-actions]

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_{Stress-test variant: 40 demo users · Built from 3a43079feccd90b03f4bf84104f6e1bc9295af0a. Auto-updates when you push.}