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

[johlju]

Details of the problem, bug, or enhancement

If a resource module has opt-in to use spell-check to spell-check is also testing markdown files inside DscResource.Tests.

Verbose logs showing the problem (if applicable)

https://ci.appveyor.com/project/johlju/dscresource-template/builds/22770345#L373

      [-] Should not have spelling errors in any markdown files 2.04s
        Expected 0, but got 1.
        1130:             $process.ExitCode | Should -Be 0
        at <ScriptBlock>, C:\projects\DscResource.Template\DscResource.Tests\Meta.Tests.ps1: line 1130
There were spelling errors. If these are false negatives, then please add the
word or phrase to the settings file '/.vscode/cSpell.json' in the repository.
See this section for more information.
https://github.com/PowerShell/DscResource.Tests/#common-tests-spellcheck-markdownfiles
CODE_OF_CONDUCT.md:5:13 - Unknown word (opencode)
CODE_OF_CONDUCT.md:5:44 - Unknown word (opencode)
DscResource.Tests/CHANGELOG.md:8:93 - Unknown word (Nuget)
DscResource.Tests/CHANGELOG.md:11:31 - Unknown word (PSPKI)
DscResource.Tests/CHANGELOG.md:15:10 - Unknown word (gitignore)
DscResource.Tests/CHANGELOG.md:29:10 - Unknown word (PSSA)
DscResource.Tests/CHANGELOG.md:136:20 - Unknown word (HKLM)
DscResource.Tests/CHANGELOG.md:263:71 - Unknown word (Guids)
DscResource.Tests/CHANGELOG.md:275:11 - Unknown word (gitattributes)
DscResource.Tests/CHANGELOG.md:279:54 - Unknown word (EXTERNALMODULEDEPENDENCIES)
DscResource.Tests/CHANGELOG.md:280:33 - Unknown word (EXTERNALMODULEDEPENDENCIES)
DscResource.Tests/CHANGELOG.md:305:50 - Unknown word (unstaged)
DscResource.Tests/CHANGELOG.md:306:15 - Unknown word (gitattributes)
DscResource.Tests/CHANGELOG.md:350:5 - Unknown word (gitattributes)
DscResource.Tests/CHANGELOG.md:350:62 - Unknown word (autocrlf)
DscResource.Tests/README.md:7:13 - Unknown word (opencode)
DscResource.Tests/README.md:7:44 - Unknown word (opencode)
DscResource.Tests/README.md:43:31 - Unknown word (psscriptanalyzer)
DscResource.Tests/README.md:45:24 - Unknown word (metafixers)
DscResource.Tests/README.md:46:24 - Unknown word (testhelper)
DscResource.Tests/README.md:49:74 - Unknown word (dscresourcetests)
DscResource.Tests/README.md:54:45 - Unknown word (codecoverage)
DscResource.Tests/README.md:54:73 - Unknown word (codecovio)
DscResource.Tests/README.md:56:59 - Unknown word (codecovio)
DscResource.Tests/README.md:57:39 - Unknown word (codecovio)
DscResource.Tests/README.md:124:13 - Unknown word (vors)
DscResource.Tests/README.md:169:10 - Unknown word (opencode)
DscResource.Tests/README.md:170:13 - Unknown word (gitattributes)
DscResource.Tests/README.md:188:3 - Unknown word (gulpfile)
DscResource.Tests/README.md:238:128 - Unknown word (PSSA)
DscResource.Tests/README.md:239:25 - Unknown word (PSSA)
DscResource.Tests/README.md:243:50 - Unknown word (PSSA)
DscResource.Tests/README.md:247:80 - Unknown word (PSSA)
DscResource.Tests/README.md:261:31 - Unknown word (Dism)
DscResource.Tests/README.md:285:31 - Unknown word (Dism)
DscResource.Tests/README.md:507:24 - Unknown word (subfolders)
DscResource.Tests/README.md:543:29 - Unknown word (HQRM)
DscResource.Tests/README.md:624:14 - Unknown word (windowsservercore)
DscResource.Tests/README.md:665:3 - Unknown word (unittest)
DscResource.Tests/README.md:667:3 - Unknown word (unittest)
DscResource.Tests/README.md:669:3 - Unknown word (unittest)
DscResource.Tests/README.md:671:3 - Unknown word (unittest)
DscResource.Tests/README.md:751:64 - Unknown word (autocrlf)
DscResource.Tests/README.md:755:33 - Unknown word (gitattributes)
DscResource.Tests/README.md:782:19 - Unknown word (PRIVATEDATA)
DscResource.Tests/README.md:790:2 - Unknown word (COMPANYNAME)
DscResource.Tests/README.md:793:2 - Unknown word (LICENSEURI)
DscResource.Tests/README.md:794:2 - Unknown word (PROJECTURI)
DscResource.Tests/README.md:795:2 - Unknown word (ICONURI)
DscResource.Tests/README.md:796:2 - Unknown word (EXTERNALMODULEDEPENDENCIES)
DscResource.Tests/README.md:797:2 - Unknown word (REQUIREDSCRIPTS)
DscResource.Tests/README.md:798:2 - Unknown word (EXTERNALSCRIPTDEPENDENCIES)
DscResource.Tests/README.md:799:2 - Unknown word (RELEASENOTES)
DscResource.Tests/README.md:800:2 - Unknown word (PRIVATEDATA)
DscResource.Tests/README.md:800:19 - Unknown word (Datacenter)
DscResource.Tests/README.md:800:35 - Unknown word (Datacenter)
    Context When uninstalling spellcheck dependencies

Suggested solution to the issue

Exclude the DscResource.Tests folder when spell-checking a resource module.