Fix typo in deprecation warning message

[cgohlke]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 42.30%. Comparing base (4b4ffd7) to head (40d83c3).
⚠️ Report is 15 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1322      +/-   ##
==========================================
- Coverage   48.89%   42.30%   -6.60%     
==========================================
  Files          16       16              
  Lines        3767     3773       +6     
==========================================
- Hits         1842     1596     -246     
- Misses       1925     2177     +252     

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