[DOCS] typo in date_histogram aggregation example (#91715)

* [DOCS] typo in date_histogram aggregation example

The field name fixed

* Update docs/reference/aggregations/bucket/datehistogram-aggregation.asciidoc

Co-authored-by: Abdon Pijpelink <abdon.pijpelink@elastic.co>

docs/reference/aggregations/bucket/datehistogram-aggregation.asciidoc

@@ -705,7 +705,7 @@ POST /sales/_search?size=0
 --------------------------------------------------
 // TEST[setup:sales]
 
-<1> Documents without a value in the `publish_date` field will fall into the
+<1> Documents without a value in the `date` field will fall into the
 same bucket as documents that have the value `2000-01-01`.
 
 [[date-histogram-order]]