Update active-directory-schema-extensions.md

Clarification on what 'they' is with regard to the previous sentence (they = attributes).

Author: robinmalik

articles/active-directory/develop/active-directory-schema-extensions.md

@@ -31,7 +31,7 @@ Directory extension attributes can be registered and populated in one of two way
 - By using Microsoft Graph to register, set the values of, and read from [directory extensions](/graph/extensibility-overview#directory-azure-ad-extensions). [PowerShell cmdlets](/powershell/azure/active-directory/using-extension-attributes-sample) are also available.
 
 ### Emitting claims with data from directory extension attributes created with Azure AD Connect
-Directory extension attributes created and synced using Azure AD Connect are always associated with the application ID used by Azure AD Connect. They can be used as a source for claims both by configuring them as claims in the **Enterprise Applications** configuration in the Portal UI for SAML applications registered using the Gallery or the non-Gallery application configuration experience under **Enterprise Applications**, and via a claims-mapping policy for applications registered via the Application registration experience.  Once a directory extension attribute created via AD Connect is in the directory, it will show in the SAML SSO claims configuration UI.
+Directory extension attributes created and synced using Azure AD Connect are always associated with the application ID used by Azure AD Connect. These attributes can be used as a source for claims both by configuring them as claims in the **Enterprise Applications** configuration in the Portal UI for SAML applications registered using the Gallery or the non-Gallery application configuration experience under **Enterprise Applications**, and via a claims-mapping policy for applications registered via the Application registration experience.  Once a directory extension attribute created via AD Connect is in the directory, it will show in the SAML SSO claims configuration UI.
 
 ### Emitting claims with data from directory extension attributes created for an application using Graph or PowerShell
 If a directory extension attribute is registered for an application using Microsoft Graph or PowerShell (via an applications initial setup or provisioning step for instance), the same application can be configured in Azure Active Directory to receive data in that attribute from a user object in a claim when the user signs in.  The application can be configured to receive data in directory extensions that are registered on that same application using [optional claims](active-directory-optional-claims.md#configuring-directory-extension-optional-claims).  These can be set in the application manifest.  This enables a multi-tenant application to register directory extension attributes for its own use. When the application is provisioned into a tenant the associated directory extensions become available to be set on users in that tenant, and to be consumed.  Once it's configured in the tenant and consent granted, it can be used to store and retrieve data via graph and to map to claims in tokens the Microsoft identity platform emits to applications.