docs: add log correlation info to plaintext

docs/en/observability/application-logs.asciidoc

@@ -36,25 +36,26 @@ For example, the same example shown above might look like this when structured w
 [[log-correlation]]
 == Log correlation
 
+To correlate your logs, you must annotate your logs with the APM identifier, `service.name`.
+Elastic APM integrates with the most popular logging frameworks in each programming language to accomplish this automatically.
+
+// tag::correlate-logs[]
 Correlating your application logs with trace events allows you to:
 
 * view the context of a log and the parameters a user provided
 * view all logs belonging to a particular trace
 * easily move between logs and traces when debugging application issues in {kib}
 
-To correlate your logs, you must add APM identifiers,
-like trace, transaction, and error ID fields into your application's logs.
-Elastic APM integrates with the most popular logging frameworks in each programming language to accomplish this automatically.
-
-Learn more about log correlation in the APM Guide: {apm-guide-ref}/log-correlation.html[log correlation]
-Or in any of the agent-specific ingestion guides:
+Learn more about log correlation in the APM Guide: {apm-guide-ref}/log-correlation.html[log correlation],
+or in any of the agent-specific ingestion guides:
 
 * {apm-go-ref}/log-correlation.html[Go]
 * {apm-java-ref}/log-correlation.html[Java]
 * {apm-dotnet-ref}/log-correlation.html[.NET]
 * {apm-node-ref}/log-correlation.html[Node.js]
 * {apm-py-ref}/log-correlation.html[Python]
 * {apm-ruby-ref}/log-correlation.html[Ruby]
+// end::correlate-logs[]
 
 [float]
 [[ingest-application-logs]]
@@ -214,7 +215,12 @@ To learn how to use the Grok processor to parse application logs before indexing
 see {ref}/common-log-format-example.html[Example: Parse logs in the Common Log Format].
 
 [float]
-=== Step 3: View your logs in {kib}
+=== Step 3: Correlate your logs
+
+include::application-logs.asciidoc[tag=correlate-logs]
+
+[float]
+=== Step 4: View your logs in {kib}
 
 Use the <<apm,APM>> or <<monitor-logs,Logs>> UI to search, filter, and visualize your logs.