[DOCS] Adds redirect for broken link

Author: lcawl

docs/en/stack/redirects.asciidoc

@@ -9,4 +9,8 @@ The following pages have moved or been deleted.
 
 See {stack-gs}/get-started-elastic-stack.html[Getting started with the {stack}].
 
+[float]
+[[logstash-setup]]
+=== Configure Logstash to listen for Beats input
 
+See {stack-gs}/get-started-elastic-stack.html#logstash-setup[Configure Logstash to listen for Beats input].