[DOC] Update version check doc

[eseiler]

Resolves #236

[seqan-actions]

Documentation preview available at https://docs.seqan.de/preview/seqan/sharg-parser/281

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.37%. Comparing base (044a18c) to head (a84690e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #281   +/-   ##
=======================================
  Coverage   94.37%   94.37%           
=======================================
  Files          20       20           
  Lines        1637     1637           
  Branches       47       47           
=======================================
  Hits         1545     1545           
  Misses         92       92           

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