Update lib/samples/authenticate_with_token/README.md

Co-authored-by: Jen Merritt <jmerritt@esri.com>

Author: PaulAllanSturm

lib/samples/authenticate_with_token/README.md

@@ -17,7 +17,7 @@ Once you launch the app, you will be challenged for an ArcGIS Online login to vi
 1. Implement the `ArcGISAuthenticationChallengeHandler` interface to handle the challenges sent by the protected map service.
 2. Set the `arcGISAuthenticationChallengeHandler` property on `AuthenticationManager`.
 3. Create a `Portal`.
-4. Create a `PortalItem` for the protected web map using the Portal and Item ID of the protected map service.
+4. Create a `PortalItem` for the protected web map using the `Portal` and Item ID of the protected map service.
 5. Create a map to display in the `ArcGISMapView` using the `PortalItem`.
 6. Set the map to display in the `ArcGISMapView`.