PR Summary

about_scriptanalyzer is terribly outdated and does not provide more help than cmdlet help itself. I think it is better to follow the DRY principle and remove it to avoid repetition that just leads to outdated documentation.
I also updated the required platyPS version in a version check, which was still using the old value
A 2nd PR could potentially simply the directory structure from root\docs\markdown to root\docs since the docs folder contains now only the markdown folder.

PR Checklist

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