Merge pull request #399 from carriecwk/DOCSP-16014

(DOCSP-16014) clarifies system dsn instructions

Author: carriecwk

source/tutorial/create-system-dsn.txt

@@ -49,6 +49,10 @@ Before creating a :abbr:`DSN (Data Source Name)`, you should:
          - :ref:`Install the BI Connector <install-bic-windows>` and
            configure it to connect to your replica set.
 
+           .. note::
+              
+              This prerequisite doesn't apply if you are using {+bi-atlas-short+}. 
+
          - Download and install `Visual C++ Redistributable for Visual Studio
            2015 <https://www.microsoft.com/en-us/download/details.aspx?id=48145>`__.
 
@@ -58,6 +62,10 @@ Before creating a :abbr:`DSN (Data Source Name)`, you should:
        content: |
          - :ref:`Install the BI Connector <install-bic-macos>` and configure it to connect to your replica set.
 
+           .. note::
+              
+              This prerequisite doesn't apply if you are using {+bi-atlas-short+}. 
+
          - Download and install the {+odbc-driver+}.
 
      - id: linux
@@ -67,6 +75,10 @@ Before creating a :abbr:`DSN (Data Source Name)`, you should:
            or :ref:`Debian-based Linux <install-bic-debian>` and
            configure it to connect to your replica set.
 
+           .. note::
+              
+              This prerequisite doesn't apply if you are using {+bi-atlas-short+}. 
+
          - Download and extract the {+odbc-driver+} for your platform.
 
 .. _create-system-dsn-bi-connector: