Fix curve to curves

[cherinyy]

The correct parameter name is curves

[codecov-commenter]

Codecov Report

Merging #521 (8baa2df) into master (ffa0215) will increase coverage by 0.04%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #521      +/-   ##
==========================================
+ Coverage   52.84%   52.89%   +0.04%     
==========================================
  Files         126      126              
  Lines       12931    12931              
==========================================
+ Hits         6834     6840       +6     
+ Misses       5457     5453       -4     
+ Partials      640      638       -2     

Flag	Coverage Δ
integration	34.09% <ø> (ø)
unit	54.38% <ø> (+0.06%)	:arrow_up:

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

Impacted Files	Coverage Δ
internal/table/file.go	65.21% <0.00%> (+4.34%)	:arrow_up:

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[foxcpp]

Thanks!