Remove loadbalance opt from the default config file

docs/configuration.asciidoc

@@ -448,9 +448,6 @@ output:
     # configure index prefix name
     index: mybeat
 
-    # configure logstash plugin to loadbalance events between the logstash instances
-    loadbalance: false
-
     tls:
       # disable tls for testing (TLS must be disabled in logstash too)
       disabled: true
@@ -475,6 +472,26 @@ the output plugin will send all events to only one host (determined by random)
 switching to another host if selected one becomes unresponsive.
 The default value is false.
 
+[source,yaml]
+------------------------------------------------------------------------------
+output:
+  logstash:
+    enabled: true
+
+    hosts: ["localhost:5044", "localhost:5045"]
+
+    # configure index prefix name
+    index: mybeat
+
+    # configure logstash plugin to loadbalance events between the logstash instances
+    loadbalance: true
+
+    tls:
+      # disable tls for testing (TLS must be disabled in logstash too)
+      disabled: true
+------------------------------------------------------------------------------
+
+
 ===== port
 
 Default port to use if port number not given in hosts. The default port number