Update example config `rest_api_endpoint` to match the default
Also updates the description of this field to specify a new requirement
merged in PR#1615.
@@ -45,8 +45,9 @@ version = "1"
# for TLS connections
#network_endpoints = ["tcps://127.0.0.1:8044"]
-# Specifies the connection endpoint for the REST API.
-#rest_api_endpoint = "127.0.0.1:8080"
+# Specifies the connection endpoint for the REST API. This value must be
+# prefixed with the protocol (http://) or splinterd will not start.
+#rest_api_endpoint = "http://127.0.0.1:8080"
# Specifies the public network endpoint for daemon-to-daemon communication
# between Splinter nodes, if the network endpoint is not public.
