remove redundant connection guide link (#149)

Author: terakilobyte

source/usage-examples.txt

@@ -53,10 +53,10 @@ Connection String
 Follow the :ref:`"Connect to your Cluster" <golang-connect-to-your-cluster>`
 step to find the
 :manual:`connection string </reference/connection-string/>` to define your
-``MONGODB_URI`` environment variable to run our usage examples. If your
+``MONGODB_URI`` environment variable to run the usage examples. If your
 instance uses :manual:`SCRAM authentication </core/security-scram/>`,
 you can replace ``<user>`` with your username, ``<password>`` with your
-password, and ``<cluster-url>`` with the IP address or URL of your instance.
+password, and ``<cluster-url>`` with the URL or IP address of your instance.
 
 To learn more about connecting to your MongoDB instance, see :ref:`golang-connection-guide`.
 
@@ -65,7 +65,7 @@ Environment Variable
 
 To connect the example to your MongoDB instance, you must :ref:`define
 an environment variable <golang-usage-examples-env-variable>` with
-:ref:`your connection string <golang-usage-examples-connection-string>`.
+your connection string.
 
 .. code-block:: go