Documentation on Helper Functions is in Wrong Section

[PlagueHO]

The documentation for the helper functions:

• New-InvalidArgumentException
• New-InvalidOperationException
• New-ObjectNotFoundException
• New-InvalidResultException

Is under the 'Helper Functions for Localization' section in the StyleGuidelines.md.
https://github.com/PowerShell/DscResources/blob/master/StyleGuidelines.md#helper-functions-for-localization

These should be moved to their own section.

[stale]

This issue has been automatically marked as stale because it has not had activity from the community in the last 30 days. It will be closed if no further activity occurs within 10 days. If the issue is labelled with any of the work labels (e.g bug, enhancement, documentation, or tests) then the issue will not auto-close.

[PlagueHO]

I'll pick this up.