Fix json for all-contribs

[kratman]

Description

Fixes a typo

Key checklist:

• No style issues: $ pre-commit run (or $ nox -s pre-commit) (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: $ python -m pytest (or $ nox -s tests)
• The documentation builds: $ python -m pytest --doctest-plus src (or $ nox -s doctests)

You can run integration tests, unit tests, and doctests together at once, using $ nox -s quick.

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[Saransh-cpp]

My bad, should have caught this in the review. Thanks!

[kratman]

@Saransh-cpp CI stalled here, I don't think my bot-fix worked. I will try again

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.21%. Comparing base (72c23ea) to head (6681af2).
Report is 22 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4669   +/-   ##
========================================
  Coverage    99.21%   99.21%           
========================================
  Files          302      302           
  Lines        22858    22878   +20     
========================================
+ Hits         22679    22699   +20     
  Misses         179      179           

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