Update aggregation.asciidoc (#24042)

There are four kinds of aggregations now, not three.
2017-04-11 16:00:47 +03:00 · 2017-04-11 16:00:47 +03:00 · 1ea4c285b6
parent e30a275bfe
commit 1ea4c285b6
1 changed files with 1 additions and 1 deletions
--- a/docs/reference/aggregations.asciidoc
+++ b/docs/reference/aggregations.asciidoc
@ -11,7 +11,7 @@ the execution defines what this document set is (e.g. a top-level aggregation ex
 query/filters of the search request).

 There are many different types of aggregations, each with its own purpose and output. To better understand these types,
-it is often easier to break them into three main families:
+it is often easier to break them into four main families:

 <<search-aggregations-bucket, _Bucketing_>>::
 				A family of aggregations that build buckets, where each bucket is associated with a _key_ and a document