Fix empty parameter example not generated

[dldl-cmd]

Pull Request

The issue or feature being addressed

Fixes: #3931

Details on the issue fix or feature implementation

Add example also when example string is empty. This allows an empty example to be documented on a parameter.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.04%. Comparing base (812a448) to head (8e004e3).
⚠️ Report is 48 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3932   +/-   ##
=======================================
  Coverage   95.04%   95.04%           
=======================================
  Files         111      111           
  Lines        3958     3958           
  Branches      801      801           
=======================================
  Hits         3762     3762           
  Misses        196      196           

Flag	Coverage Δ
Linux	95.04% <100.00%> (ø)
Windows	95.04% <100.00%> (ø)
macOS	95.04% <100.00%> (ø)

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[github-actions]

Thanks for your contribution @dldl-cmd - the changes from this pull request have been published as part of version 10.2.2 📦, which is now available from NuGet.org 🚀