[DOCS] Clarified TLS note

Author: lcawl

docs/en/stack/security/get-started-security.asciidoc

@@ -63,9 +63,9 @@ xpack.security.enabled: true
 ----
 
 NOTE: This tutorial involves a single node cluster, but if you had multiple 
-nodes, you would enable {security} on every node in the cluster. If you have a 
-multi-node cluster, you must also configure Transport Layer Security (TLS) for 
-internode-communication, which is beyond the scope of this tutorial. 
+nodes, you would enable {security} on every node in the cluster and configure 
+Transport Layer Security (TLS) for internode-communication, which is beyond the 
+scope of this tutorial. 
 
 When you enable {security}, basic authentication is enabled by default. To 
 communicate with the cluster, you must specify a username and password.