Let httr2 take care of token refreshing

Change-Id: I68f35fa8debb9603e937c4a12328560ac31f61a1
diff --git a/man/auth-KorAPConnection-method.Rd b/man/auth-KorAPConnection-method.Rd
index ff41b6b..cf06c01 100644
--- a/man/auth-KorAPConnection-method.Rd
+++ b/man/auth-KorAPConnection-method.Rd
@@ -5,13 +5,20 @@
 \alias{auth}
 \title{Authorize RKorAPClient}
 \usage{
-\S4method{auth}{KorAPConnection}(kco, app_id = generic_kor_app_id, scope = "search match_info")
+\S4method{auth}{KorAPConnection}(
+  kco,
+  app_id = generic_kor_app_id,
+  app_secret = NULL,
+  scope = kco@oauthScope
+)
 }
 \arguments{
 \item{kco}{KorAPConnection object}
 
 \item{app_id}{OAuth2 application id. Defaults to the generic KorAP client application id.}
 
+\item{app_secret}{OAuth2 application secret. Used with confidential client applications. Defaults to \code{NULL}.}
+
 \item{scope}{OAuth2 scope. Defaults to "search match_info".}
 }
 \value{