docs: specify sc.tl.score_genes array type support

[flying-sheep]

• Closes #
• Tests included or not required because:

• Release notes not necessary because: small fixup

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.94%. Comparing base (6426186) to head (5a4c972).
⚠️ Report is 2 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3989   +/-   ##
=======================================
  Coverage   77.94%   77.94%           
=======================================
  Files         117      117           
  Lines       12506    12506           
=======================================
  Hits         9748     9748           
  Misses       2758     2758           

Flag	Coverage Δ
hatch-test.low-vers	77.22% <ø> (ø)
hatch-test.pre	76.88% <ø> (ø)

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Files with missing lines	Coverage Δ
src/scanpy/tools/_score_genes.py	86.53% <ø> (ø)