Move section about Logstash to bottom of Kafka output page (#1430)

(cherry picked from commit b05a3ab)

docs/en/ingest-management/fleet/fleet-settings-output-kafka.asciidoc

@@ -5,33 +5,7 @@
 
 Specify these settings to send data over a secure connection to Kafka. In the {fleet} <<output-settings,Output settings>>, make sure that the Kafka output type is selected. 
 
-== Kafka output and using {ls} to index data to {es}
-
-If you are considering using {ls} to ship the data from `kafka` to {es}, please
-be aware the structure of the documents sent from {agent} to `kafka` must not be modified by {ls}.
-We suggest disabling `ecs_compatibility` on both the `kafka` input and the `json` codec in order
-to make sure the input doesn't edit the fields and their contents.
-
-The data streams setup by the integrations expect to receive events having the same structure and
-field names as they were sent directly from an {agent}.
-
-The structure of the documents sent from {agent} to `kafka` must not be modified by {ls}.
-We suggest disabling `ecs_compatibility` on both the `kafka` input and the `json` codec.
-
-Refer to the <<ls-output-settings,{ls} output for {agent}>> documentation for more details.
-
-[source,yaml]
-----
-inputs {
-  kafka {
-    ...
-    ecs_compatibility => "disabled"
-    codec => json { ecs_compatibility => "disabled" }
-    ...
-  }
-}
-...
-----
+NOTE: If you plan to use {ls} to modify {agent} output data before it's sent to Kafka, please refer to our <<kafka-output-settings-ls-warning,guidance>> for doing so, further in on this page.
 
 [discrete]
 == General settings
@@ -559,4 +533,33 @@ include::../elastic-agent/configuration/outputs/output-shared-settings.asciidoc[
 
 |===
 
+[[kafka-output-settings-ls-warning]]
+== Kafka output and using {ls} to index data to {es}
+
+If you are considering using {ls} to ship the data from `kafka` to {es}, please
+be aware the structure of the documents sent from {agent} to `kafka` must not be modified by {ls}.
+We suggest disabling `ecs_compatibility` on both the `kafka` input and the `json` codec in order
+to make sure the input doesn't edit the fields and their contents.
+
+The data streams setup by the integrations expect to receive events having the same structure and
+field names as they were sent directly from an {agent}.
+
+The structure of the documents sent from {agent} to `kafka` must not be modified by {ls}.
+We suggest disabling `ecs_compatibility` on both the `kafka` input and the `json` codec.
+
+Refer to the <<ls-output-settings,{ls} output for {agent}>> documentation for more details.
+
+[source,yaml]
+----
+inputs {
+  kafka {
+    ...
+    ecs_compatibility => "disabled"
+    codec => json { ecs_compatibility => "disabled" }
+    ...
+  }
+}
+...
+----
+
 :type!: