DOCSP-10371: address feedback on findOne usage example (#102)

Author: Chris Cho

source/usage-examples/findOne.txt

@@ -6,19 +6,19 @@ Find a Document
 
 .. note::
    If you specify a callback method, ``findOne()`` returns nothing. If you do
-   not specify one, this method returns a
-   :mdn:`Promise <Web/JavaScript/Reference/Global_Objects/Promise>` that
-   resolves to the result object when it completes. For more information on
-   the result object type, see the
-   :node-api:`API documentation <Collection.html#~resultCallback>`.
-
-You can query for a single document in a collection with
-the ``collection.findOne()`` method. The ``findOne()`` method uses a query
+   not specify one, this method returns a ``Promise`` that resolves to the
+   result object when it completes. See our guide on :doc:`Promises and
+   Callbacks </fundamentals/promises>` for more information, or the
+   :node-api:`API documentation <Collection.html#~resultCallback>` for
+   information on the result object.
+
+You can query for a single document in a collection with the
+``collection.findOne()`` method. The ``findOne()`` method uses a query
 document that you provide to match only the subset of the documents in the
-collection that match the query. If you don't provide a query document (or if
-you provide an empty document), MongoDB matches all documents in the
-collection. However, the operation only returns the first matched document.
-For more information on querying MongoDB, see our
+collection that match the query. If you don't provide a query document or if
+you provide an empty document, MongoDB matches all documents in the
+collection. The ``findOne()`` operation only returns the first matched
+document. For more information on querying MongoDB, see our
 :doc:`documentation on query documents </fundamentals/crud/query-document>`.
 
 You can also define additional query options such as
@@ -33,7 +33,7 @@ Example
 -------
 
 The following snippet finds a single document from the ``movies``
-collection. It uses the following:
+collection. It uses the following parameters:
 
 - A **query document** that configures the query to return only
   movies with the title of exactly the text ``'The Room'``.
@@ -50,5 +50,12 @@ collection. It uses the following:
 
 .. literalinclude:: /code-snippets/usage-examples/findOne.js
   :language: javascript
-  :emphasize-lines: 26
-  :linenos:
+  :dedent: 4
+
+If you run the example above, you should see a result that resembles the
+following:
+
+.. code-block:: javascript
+
+   { title: 'The Room', imdb: { rating: 3.5, votes: 25673, id: 368226 } }
+