Fix a typo

[striezel]

This pull request fixes a small typo.

[codecov-commenter]

Codecov Report

Base: 66.70% // Head: 66.70% // No change to project coverage 👍

Coverage data is based on head (1c1b02c) compared to base (016a8e9).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #12   +/-   ##
=======================================
  Coverage   66.70%   66.70%           
=======================================
  Files         111      111           
  Lines        2346     2346           
=======================================
  Hits         1565     1565           
  Misses        781      781           

Impacted Files	Coverage Δ
include/tao/config/internal/concat.hpp	77.14% <0.00%> (ø)

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[ColinH]

Thanks you for all your contributions!