[Docs] Fix typo in cardinality-aggregation.asciidoc
@@ -63,7 +63,7 @@ POST /sales/_search?size=0
defines a unique count below which counts are expected to be close to
accurate. Above this value, counts might become a bit more fuzzy. The maximum
supported value is 40000, thresholds above this number will have the same
-effect as a threshold of 40000. The default values is +3000+.
+effect as a threshold of 40000. The default value is +3000+.
==== Counts are approximate
