use new Resource Authorization Server term

Author: aaronpk

draft-ietf-oauth-identity-assertion-authz-grant.md

@@ -402,7 +402,7 @@ To advertise support for the Identity Assertion Authorization Grant, the authori
 
 ## Client Authentication
 
-This specification SHOULD only be supported for confidential clients.  Public clients SHOULD use the existing authorization code grant and redirect the user to the Resource Application's Authorization Server with an OAuth 2.0 Authorization Request where the user can interactively consent to the access delegation.
+This specification SHOULD only be supported for confidential clients.  Public clients SHOULD use the existing authorization code grant and redirect the user to the Resource Authorization Server with an OAuth 2.0 Authorization Request where the user can interactively consent to the access delegation.
 
 ## Step-Up Authentication