Fix docstring of getgid

[giordano]

No description provided.

[codecov]

Codecov Report

Merging #82 (d8f39f6) into main (ed87f07) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #82   +/-   ##
=======================================
  Coverage   79.13%   79.13%           
=======================================
  Files           6        6           
  Lines         580      580           
=======================================
  Hits          459      459           
  Misses        121      121           

Impacted Files	Coverage Δ
src/utils.jl	69.38% <ø> (ø)

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