DOCSP-19732: clarify max batch size with examples (#211)

* DOCSP-19732: clarify max batch size with examples

Author: Chris Cho

source/sink-connector/configuration-properties/connector-message.txt

@@ -38,6 +38,25 @@ Settings
        | **Description:**
        | Maximum number of sink records to batch together for processing.
        |
+       | Consider the batch that contains the following records:
+
+         .. code-block:: none
+            :copyable: false
+
+            [ 1, 2, 3, 4, 5 ]
+
+       | When set to ``0``, the connector performs a single bulk write for
+         the entire batch.
+       |
+       | When set to ``1``, the connector performs one bulk write for each
+         record in the batch, for a total of five bulk writes as shown in
+         the following example:
+
+         .. code-block:: none
+            :copyable: false
+
+            [1], [2], [3], [4], [5]
+
        | **Default**: ``0``
        | **Accepted Values**: An integer