add examples to the command line options for remsim-bankd and remsim-client

Change-Id: Idfa6352ce90dd36dd27306d6c8a2023935ed822d
diff --git a/contrib/etc_default/osmo-remsim-client-3 b/contrib/etc_default/osmo-remsim-client-3
index 149af2b..da48eaa 100644
--- a/contrib/etc_default/osmo-remsim-client-3
+++ b/contrib/etc_default/osmo-remsim-client-3
@@ -4,3 +4,4 @@
 REMSIM_I="1"
 REMSIM_H="2-1.4"
 REMSIM_c="0"
+REMSIM_n="3"