Fix typo in percolate-query.asciidoc (#29155)

Author: tnsatish

docs/reference/query-dsl/percolate-query.asciidoc

@@ -37,7 +37,7 @@ the `percolator` query before it gets indexed into a temporary index.
 The `query` field is used for indexing the query documents. It will hold a
 json object that represents an actual Elasticsearch query. The `query` field
 has been configured to use the <<percolator,percolator field type>>. This field
-type understands the query dsl and stored the query in such a way that it can be
+type understands the query dsl and stores the query in such a way that it can be
 used later on to match documents defined on the `percolate` query.
 
 Register a query in the percolator: