Fix typo in QueuesCommand code comments

[Palleas]

Noticed a tiny typo when looking at the code.

[gwynne]

Nice catch, thanks!

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 84.48%. Comparing base (2d38cd2) to head (bf8ea20).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/Queues/QueuesCommand.swift	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #136   +/-   ##
=======================================
  Coverage   84.48%   84.48%           
=======================================
  Files          22       22           
  Lines         709      709           
=======================================
  Hits          599      599           
  Misses        110      110           

Files with missing lines	Coverage Δ
Sources/Queues/QueuesCommand.swift	62.69% <50.00%> (ø)