typo (missing verb)

Author: bb-froggy

exchange/docs-conceptual/exchange-server/recipient-filters/recipientfilter-properties.md

@@ -40,7 +40,7 @@ The recipient properties that have been  *confirmed*  to work with the _Recipien
 
 - You can't use properties from other Active Directory schema extensions with the _RecipientFilter_ parameter.
 
-- Not all recipient properties have a corresponding Active Directory property. The LDAP display name value in the table is "n/a" for these properties, which indicates that the property calculated (likely by Exchange).
+- Not all recipient properties have a corresponding Active Directory property. The LDAP display name value in the table is "n/a" for these properties, which indicates that the property is calculated (likely by Exchange).
 
 - You typically use the object's name for properties that require a valid object value (for example, a mailbox, a distribution group, or an email address policy, but the property might also accept the object's distinguished name (DN) or globally unique identifier (GUID). To find the object's DN or GUID, use the **Get-** cmdlet that corresponds to the object's type (for example, `Get-EmailAddressPolicy | Format-List Name,DistinguishedName,GUID`).