Updated Get-Help Markdown - Take 2

[MSAdministrator]

Version(s) of document impacted

• Impacts 6 document
• Impacts 5.1 document
• Impacts 5.0 document
• Impacts 4.0 document
• Impacts 3.0 document

Reason(s) for not updating all version of documents

• The documented feature was introduced in version (list version here) of PowerShell
• This issue only shows up in version (list version(s) here) of the document
• This PR partially fixes the issue, and issue # tracks the remaining work

This is related to a larger body of work. This was initiated by and is related to #1511 & #1025

[saldana]

❌ Validation status: errors

File	Status	Preview URL	Details
reference/3.0/Microsoft.PowerShell.Core/Get-Help.md	❌Error		Details
	❌Error		Details

reference/3.0/Microsoft.PowerShell.Core/Get-Help.md

• [Error] Unable to load file: 3.0/Microsoft.PowerShell.Core/Get-Help.md via processor: AzureCliDocumentProcessor.

• [Error] Markdown.MAML.Transformer.HelpSchemaException: :185:(1257) '```powershell
  PS C:> Update-Help

'
 Expect Heading
   at Microsoft.DocAsCode.Build.Engine.SingleDocumentBuilder.GetInnerContexts(DocumentBuildParameters parameters, IEnumerable`1 processors, TemplateProcessor templateProcessor, IHostServiceCreator creator)
   at Microsoft.DocAsCode.Build.Engine.SingleDocumentBuilder.BuildCore(DocumentBuildParameters parameters)
   at Microsoft.DocAsCode.Build.Engine.DocumentBuilder.BuildCore(DocumentBuildParameters parameter, IMarkdownServiceProvider markdownServiceProvider, BuildInfo currentBuildInfo, BuildInfo lastBuildInfo)
   at Microsoft.DocAsCode.Build.Engine.DocumentBuilder.Build(IList`1 parameters, String outputDirectory)
   at Microsoft.DocAsCode.SubCommands.DocumentBuilderWrapper.BuildDocument(BuildJsonConfig config, TemplateManager templateManager, String baseDirectory, String outputDirectory, String pluginDirectory, String templateDirectory)
   at Microsoft.DocAsCode.SubCommands.DocumentBuilderWrapper.BuildDocument()

For more details, please refer to the [build report](https://opbuildstorageprod.blob.core.windows.net/report/2018%5C1%5C19%5Cbab27324-4c59-a348-1473-9c6d587e4020%5CPullRequest%5C201801190533388256-2074%5Cworkflow_report.html?sv=2015-02-21&sr=b&sig=DlvGy0Zpe0kDh%2BsdKbXizhhUz1e35y9ZKCctg43s0Q0%3D&st=2018-01-19T05%3A34%3A24Z&se=2018-02-19T05%3A39%3A24Z&sp=r).

**Note:** If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.

[sdwheeler]

@MSAdministrator - I know what if wrong with the v3 article. It is an esoteric but in PlatyPS. I can fix the content to avoid the problem.