(DOCSP-14150) Clarify ODBC driver connection (#298)

* (DOCSP-14150) Clarify ODBC driver connection

* Edit diagram

* Resize diagram

Author: zach-carr

source/reference/odbc-driver.txt

@@ -25,6 +25,15 @@ the |bi-short| :doc:`authentication plugin </reference/auth-plugin-c>`,
 which implements the client side of MongoDB-supported authentication
 mechanisms.
 
+.. note::
+
+   The {+odbc-driver+} connects the DSN to the BI Connector.
+   
+   .. figure:: /images/bi-connector/components-all.jpg
+      :figwidth: 700px
+      :align: center
+      :alt: Diagram showing that the DSN connects to the BI Connector.
+
 Compatibility
 -------------