Change client_id_scheme to a prefix

examples/client_metadata/client_code_format.json

@@ -1,5 +1,5 @@
 {
-  "client_id": "s6BhdRkqt3",
+  "client_id": "pre-registered:s6BhdRkqt3",
   "redirect_uri": "https://client.example.org/callback",
   "token_endpoint_auth_method": "client_secret_basic",
   "response_type": "code",

examples/digital_credentials_api/signed_request_payload.json

@@ -1,6 +1,5 @@
 {
   "client_id": "https://client.example.org",
-  "client_id_scheme": "entity_id",
   "expected_origins": [
     "https://origin1.example.com",
     "https://origin2.example.com"

examples/request/request_object_client_id_did.json

@@ -1,6 +1,5 @@
 {
   "client_id": "did:example:123",
-  "client_id_scheme": "did",
   "response_type": "vp_token",
   "redirect_uri": "https://client.example.org/callback",
   "nonce": "n-0S6_WzA2Mj",

examples/response/jarm_jwt_vc_json_body.json

@@ -1,6 +1,6 @@
 {
   "iss": "did:example:ebfeb1f712ebc6f1c276e12ec21",
-  "aud": "https://client.example.org/cb",
+  "aud": "redirect_uri:https://client.example.org/cb",
   "exp": 1573029723,
   "vp_token": "eyJhb...YMetA",
   "presentation_submission": {

examples/response/jwt_vp.json

@@ -1,7 +1,7 @@
 {
   "iss": "did:example:ebfeb1f712ebc6f1c276e12ec21",
   "jti": "urn:uuid:3978344f-8596-4c3a-a978-8fcaba3903c5",
-  "aud": "https://client.example.org/cb",
+  "aud": "x509_san_uri:https://client.example.org/cb",
   "nbf": 1541493724,
   "iat": 1541493724,
   "exp": 1573029723,