Polish UserInfoRetriever

Issue gh-4695

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/authentication/userinfo/UserInfoRetriever.java

@@ -31,6 +31,6 @@ import org.springframework.security.oauth2.client.authentication.AuthorizedClien
  */
 public interface UserInfoRetriever {
 
-	<T> T retrieve(AuthorizedClient clientAuthentication, Class<T> responseType) throws OAuth2AuthenticationException;
+	<T> T retrieve(AuthorizedClient authorizedClient, Class<T> responseType) throws OAuth2AuthenticationException;
 
 }