fix: comment for CreateOnDuplicateWithUpdateFields

[kumakichi]

No description provided.

[codecov]

Codecov Report

Merging #39 (4e0cf94) into v2 (cfeef6a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##               v2      #39   +/-   ##
=======================================
  Coverage   59.91%   59.91%           
=======================================
  Files          58       58           
  Lines        5079     5079           
=======================================
  Hits         3043     3043           
  Misses       1923     1923           
  Partials      113      113           

Flag	Coverage Δ
unittests	59.91% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
generator/model_crud.go	98.83% <ø> (ø)

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