sample-config: add no-rest-tls

sample-lnd.conf

@@ -176,6 +176,9 @@
 ; Disable REST API.
 ; norest=true
 
+; Disable TLS for the REST API.
+; no-rest-tls=true
+
 ; Shortest backoff when reconnecting to persistent peers. Valid time units are
 ; {s, m, h}.
 ; minbackoff=1s