New-DscResourcePowerShellHelp: Reduce duplicate code

[johlju]

Suggest making a helper function for this section as is is duplicated three times in this function.

DscResource.DocGenerator/source/Public/New-DscResourcePowerShellHelp.ps1

Lines 303 to 306 in d8714de

	$synopsis = $synopsis -replace '[\r|\n]+$' # Removes all blank rows at the end
	$synopsis = $synopsis -replace '\r?\n', "`r`n" # Normalize to CRLF
	$synopsis = $synopsis -replace '\r\n', "`r`n " # Indent all rows
	$synopsis = $synopsis -replace '[ ]+\r\n', "`r`n" # Remove indentation from blank rows

[johlju]

The new helper function might be used for this as well.

DscResource.DocGenerator/source/Public/New-DscResourcePowerShellHelp.ps1

Lines 159 to 161 in d8714de

	$descriptionContent = $descriptionContent -replace '# Description\r\n ', ".DESCRIPTION"
	$descriptionContent = $descriptionContent -replace '\r\n\s{4}\r\n', "`r`n`r`n"
	$descriptionContent = $descriptionContent -replace '\s{4}$', ''