Update the help for New-AzureRmTag cmdlets

[ravbhatnagar]

As per the help here - https://docs.microsoft.com/en-us/powershell/module/azurerm.tags/get-azurermtag?view=azurermps-3.8.0
If the subscription includes any predefined tags, you cannot apply undefined tags or values to any resource or resource group in the subscription.”
The above is not accurate. Please revisit the help for the related cmdlets and fix.

[cormacpayne]

@ravbhatnagar Hey Gaurav, would you mind putting this issue into a milestone?

[cormacpayne]

This has been fixed and will be available in the 6.6.0 release of AzureRM