Merge pull request #7157 from dahager/patch-2

Removed Doulbe Entry of  [-OAuthAuthentication

Author: chrisda

exchange/exchange-ps/exchange/Set-WebServicesVirtualDirectory.md

@@ -38,7 +38,6 @@ Set-WebServicesVirtualDirectory [-Identity] <VirtualDirectoryIdParameter>
  [-MRSProxyEnabled <Boolean>]
  [-MRSProxyMaxConnections <Unlimited>]
  [-OAuthAuthentication <Boolean>]
- [-OAuthAuthentication <Boolean>]
  [-UpdateManagementVirtualDirectory]
  [-WhatIf]
  [-WindowsAuthentication <Boolean>]