directive and grammar fixes to quick-start (#84)

* use code-block, fix grammar

Author: Chris Cho

source/quick-start.txt

@@ -179,7 +179,7 @@ Run the sample code with the following command from your command line:
 When you run the command, the sample code should output the details of the
 movie which resembles the following:
 
-::
+.. code-block:: none
 
    {
      _id: ...,
@@ -202,5 +202,5 @@ Next Steps
 ----------
 
 Learn how to read and modify data using the Node.js driver in our
-:doc:`CRUD fundamentals </fundamentals/crud>` guide, or how to perform common
-operations from our :doc:`usage examples </usage-examples>`.
+:doc:`CRUD Operations guide </fundamentals/crud>` or how to perform common
+operations in our :doc:`usage examples </usage-examples>`.