fix: fixed zsh completions by replacing brackets in option descriptions

[crai0]

Pull Request Checklist

• A news fragment is added in news/ describing what is new.
• Test cases added for changed code.

Describe what you have changed in this PR.

Fixed #1847 by replacing the brackets in the option descriptions with parentheses.

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: -0.08 ⚠️

Comparison is base (d6db424) 85.38% compared to head (f77579b) 85.30%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1848      +/-   ##
==========================================
- Coverage   85.38%   85.30%   -0.08%     
==========================================
  Files          99       99              
  Lines        9032     9032              
  Branches     1954     1954              
==========================================
- Hits         7712     7705       -7     
- Misses        889      896       +7     
  Partials      431      431              

Flag	Coverage Δ
unittests	85.11% <ø> (-0.08%)	⬇️

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see 2 files with indirect coverage changes

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[frostming]

Thanks