DOCS-13696: fix aggregation pipeline manual link (#20)

* DOCS-13696: fix aggregation pipeline manual link

Author: Chris Cho

source/kafka-configure-ssl.txt

@@ -48,7 +48,7 @@ Key Store
 If your SSL/TLS configuration requires a client certificate to connect,
 generate a secure private key and provide the client certificate bundled
 with the intermediate authority certificate. You can use ``openssl`` to
-generate a :wikipedia:`pkcs12 </PKCS_12>` file to store this information
+generate a :wikipedia:`pkcs12 <PKCS_12>` file to store this information
 in your key store using the following command:
 
 .. code-block:: none

source/kafka-connect-migration.txt

@@ -29,8 +29,8 @@ Update Configuration Settings
 
 - Replace any keys that were used to specify per-topic and collection
   overrides that contain the ``mongodb.collection`` prefix with the
-  equivalent key in `Topic-Specific Configuration Settings
-  <https://github.com/mongodb/mongo-kafka/blob/master/docs/sink.md#topic-specific-configuration-settings>`_.
+  equivalent key in :ref:`Topic-Specific Configuration Settings
+  <topic-specific-configuration>`.
 
 .. _custom-class-changes:
 

source/kafka-source.txt

@@ -244,7 +244,7 @@ Custom Pipeline Example
 -----------------------
 
 You can use the ``pipeline`` configuration setting to define a custom
-:manual:`aggregation pipeline <reference/operator/aggregation-pipeline/>`
+:manual:`aggregation pipeline </reference/operator/aggregation-pipeline/>`
 to filter or modify the change events output. In this example, we set the
 ``pipeline`` configuration to observe only insert change events: