Supress ProgressAction parameter from New-MarkdownHelp output

[chrisda]

Summary of the new feature / enhancement

Typically, I run New-MarkdownHelp (v14.2) in PowerShell 5.1x. I recently had occasion to run it in PowerShell 7.4.3. When I did, every cmdlet got a new ProgressAction parameter. According to about_CommonParameters, ProgressAction is a common parameter like Debug or Verbose. Unclear why only that common parameter is getting added to cmdlet articles.

Proposed technical implementation details (optional)

ProgressAction doesn't need to appear in the output of New-MarkdownHelp. This issue might be similar to the AsJob parameter as described in #339 (although AsJob was related to remote PowerShell).