docs: add marcalexiei as a contributor for code

[allcontributors]

Adds @marcalexiei as a contributor for code.

This was requested by michaelfaith in this comment

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.39%. Comparing base (0d895ff) to head (65fe826).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1483   +/-   ##
=======================================
  Coverage   97.39%   97.39%           
=======================================
  Files          28       28           
  Lines         575      575           
  Branches      169      169           
=======================================
  Hits          560      560           
  Misses          1        1           
  Partials       14       14           

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