doc: Specify preference for RPKI cache server

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>

diff --git a/doc/user/rpki.rst b/doc/user/rpki.rst
index b92332c17339444cf13a994bf248d57f1f8c7be3..cc0e7f70c60f72afc94f7c29ff43e9f3be444e22 100644 (file)
--- a/doc/user/rpki.rst
+++ b/doc/user/rpki.rst
@@ -120,7 +120,7 @@ The following commands are independent of a specific cache server.
 
    The default value is 600 seconds.
 
-.. clicmd:: rpki cache (A.B.C.D|WORD) PORT [SSH_USERNAME] [SSH_PRIVKEY_PATH] [KNOWN_HOSTS_PATH] [source A.B.C.D] PREFERENCE
+.. clicmd:: rpki cache (A.B.C.D|WORD) PORT [SSH_USERNAME] [SSH_PRIVKEY_PATH] [KNOWN_HOSTS_PATH] [source A.B.C.D] preference (1-255)
 
 
    Add a cache server to the socket. By default, the connection between router