When opt-in to markdown links check, the cloned DscResource.Tests is also checked

[sergey-s-betke]

Details of the problem, bug, or enhancement

When opt-in to markdown links check, the cloned DscResource.Tests is also spell-checked

Verbose logs showing the problem (if applicable)

https://ci.appveyor.com/project/sergey-s-betke/xitghyperv/builds/24480593

[PlagueHO]

Good catch @sergey-s-betke - thanks for raising this! It should be an easy fix. Labelled it as good first issue.