FI-2990: Fix typo in Request Details Modal

[AlyssaWang]

Summary

Fixes a typo that prevented the request body from appearing properly in the RequestDetailsModal.

Testing Guidance

For a test with a request body, check the Details modal to ensure that it appears.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 79.65%. Comparing base (c91b44c) to head (de2de27).
Report is 1 commits behind head on main.

Files	Patch %	Lines
...mponents/RequestDetailModal/RequestDetailModal.tsx	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #519      +/-   ##
==========================================
- Coverage   79.72%   79.65%   -0.07%     
==========================================
  Files         249      249              
  Lines       13177    13177              
  Branches     1290     1289       -1     
==========================================
- Hits        10505    10496       -9     
- Misses       1922     1932      +10     
+ Partials      750      749       -1     

Flag	Coverage Δ
backend	91.66% <ø> (ø)
frontend	74.54% <0.00%> (-0.10%)	⬇️

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[emichaud998]

Looks good, just tested it out with the test kit I originally found the problem in and it fixed it!