[DOCS] Edited title/subtitle.
[[elasticsearch-intro]]
-= You know, for search (and analysis)
+= Elasticsearch introduction
[partintro]
--
+_**You know, for search (and analysis)**_
+
{es} is the distributed search and analytics engine at the heart of
the {stack}. {ls} and {beats} facilitate collecting, aggregating, and
enriching your data and storing it in {es}. {kib} enables you to
