Missing Description in new Assert assertions

[fflaten]

Checklist

• [X] Issue has a meaningful title
• [X] I have searched the existing issues. See open documentation issues

Where did you see it?

Pester (latest)

Function name

Should-*

What is the issue?

New Should-* functions are missing Description-section. Wasn't caught by help tests as Should-* is currently excluded. See https://github.com/pester/Pester/pull/2489/commits/8f1036e407abfbccec785a1672b09fbde6e9b049

[nohwnd]

I've changed the code to exclude Should-*.