Enhance Readme

Author: raz-mon

README.md

@@ -177,6 +177,7 @@ optional arguments:
 
   --dualTLS             Initialize both TLS and non-TLS ports for all shards.
                         The non-TLS ports will be the TLS ports + 1500.
+                        Only effective when TLS is active (see `useTLS`).
 
 ```