Typo fixes

Author: chrisda

exchange/exchange-ps/exchange/New-Mailbox.md

@@ -101,7 +101,7 @@ New-Mailbox [-Name] <String> -Password <SecureString> -MicrosoftOnlineServicesID
 
 ### Arbitration
 ```
-New-Mailbox [-Name] [-Arbitration] <String> [-Password <SecureString>] [-UserPrincipalName <String>]
+New-Mailbox [-Name] <String> [-Arbitration] [-Password <SecureString>] [-UserPrincipalName <String>]
  [-ActiveSyncMailboxPolicy <MailboxPolicyIdParameter>]
  [-AddressBookPolicy <AddressBookMailboxPolicyIdParameter>]
  [-Alias <String>]

exchange/exchange-ps/exchange/New-MigrationBatch.md

@@ -166,7 +166,7 @@ New-MigrationBatch -Name <String> -CSVData <Byte[]> -SourcePublicFolderDatabase
 
 ### PreexistingUserIds
 ```
-New-MigrationBatch <MultiValuedProperty> -Name <String> [-UserIds]
+New-MigrationBatch -Name <String> [-UserIds] <MultiValuedProperty>
  [-AllowIncrementalSyncs <Boolean>]
  [-AllowUnknownColumnsInCsv <Boolean>]
  [-AutoComplete]

exchange/exchange-ps/exchange/New-OwaVirtualDirectory.md

@@ -22,7 +22,7 @@ For information about the parameter sets in the Syntax section below, see [Excha
 
 ```
 New-OwaVirtualDirectory
- [[-ApplicationRoot <String>]
+ [-ApplicationRoot <String>]
  [-AppPoolId <String>]
  [-Confirm]
  [-DomainController <Fqdn>]

exchange/exchange-ps/exchange/Remove-PublicFolderAdministrativePermission.md

@@ -39,7 +39,7 @@ Remove-PublicFolderAdministrativePermission[[-Identity] <PublicFolderIdParameter
  [-Confirm]
  [-Deny]
  [-DomainController <Fqdn>]
-  [-InheritanceType <ActiveDirectorySecurityInheritance>]
+ [-InheritanceType <ActiveDirectorySecurityInheritance>]
  [-Server <ServerIdParameter>]
  [-User <SecurityPrincipalIdParameter>]
  [-WhatIf]