DOCSP-33332: fix confluent sink connector link (#140)

fix confluent sink connector link

Author: Chris Cho

source/index.txt

@@ -39,7 +39,7 @@ offerings to host your {+kafka+} cluster and {+connector+}:
   - Register to learn more about the `MongoDB Source Connector <https://confluent.cloud/go/new-source-connector/MongoDbAtlasSource?utm_campaign=tm.partner_cd.cwc-mongodb&utm_medium=partnerref>`__,
     or read the `documentation <https://docs.confluent.io/cloud/current/connectors/cc-mongo-db-source.html>`__.
   - Register to learn more about the `MongoDB Sink Connector <https://confluent.cloud/go/new-sink-connector/MongoDbAtlasSink?utm_campaign=tm.partner_cd.cwc-mongodb&utm_medium=partnerref>`__,
-    or read the `documentation <https://docs.confluent.io/cloud/current/connectors/cc-mongo-db-source.html>`__.
+    or read the `documentation <https://docs.confluent.io/cloud/current/connectors/cc-mongo-db-sink.html>`__.
 
 - `Amazon Managed Streaming for Apache Kafka (MSK) <https://aws.amazon.com/msk/>`__
 - `Redpanda Cloud <https://redpanda.com/redpanda-cloud>`__