top_hits doc example description update
Example description does not fit example code.
@@ -28,8 +28,8 @@ The top_hits aggregation returns regular search hits, because of this many per h
==== Example
-In the following example we group the questions by tag and per tag we show the last active question. For each question
-only the title field is being included in the source.
+In the following example we group the sales by type and per type we show the last sale.
+For each sale only the date and price fields are being included in the source.
[source,js]
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