typo fix

Author: schmalliso

source/kafka-sink-postprocessors.txt

@@ -657,7 +657,7 @@ Custom Write Models
 A **write model** defines the behavior of bulk write operations made on a
 MongoDB collection. The default write model for the connector is
 :java-docs:`ReplaceOneModel
-<javadoc/com/mongodb/client/model/ReplaceOneModel.html>` with
+</javadoc/com/mongodb/client/model/ReplaceOneModel.html>` with
 :java-docs:`ReplaceOptions </javadoc/com/mongodb/client/model/ReplaceOptions.html>`
 set to upsert mode.