DOCSP-10386: address feedback on Count documentation (#104)

Author: Chris Cho

source/code-snippets/usage-examples/count.js

@@ -12,23 +12,21 @@ async function run() {
     await client.connect();
 
     const database = client.db("sample_mflix");
-    const collection = database.collection("movies");
+    const movies = database.collection("movies");
 
     // Estimate the total number of documents in the collection
     // and print out the count.
-    var estimate = await collection.estimatedDocumentCount();
-    console.log(
-      "Estimated number of documents in the movies collection: " + estimate,
-    );
+    const estimate = await movies.estimatedDocumentCount();
+    console.log(`Estimated number of documents in the movies collection: ${estimate}`);
 
     // Query for movies from Canada.
     const query = { countries: "Canada" };
 
     // Find the number of documents that match the specified
     // query, (i.e. with "Canada" as a value in the "countries" field)
     // and print out the count.
-    var countCanada = await collection.countDocuments(query);
-    console.log("Number of movies from Canada: " + countCanada);
+    const countCanada = await movies.countDocuments(query);
+    console.log(`Number of movies from Canada: ${countCanada}`);
   } finally {
     await client.close();
   }

source/usage-examples/count.txt

@@ -7,18 +7,18 @@ Count Documents
 .. note::
    If you specify a callback method, ``countDocuments()`` and
    ``estimatedDocumentCount()`` return 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#~countCallback>`.
+   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#~countCallback>` for
+   information on the result object.
 
-The Node.js driver provides two methods for counting
-documents in a collection:
+The Node.js driver provides two methods for counting documents in a
+collection:
 
 - :node-api:`collection.countDocuments()
   <Collection.html#countDocuments>` returns the number of documents in
-  the collection that match the specified query. If you specify a empty
+  the collection that match the specified query. If you specify an empty
   query document, ``countDocuments()`` returns the total number of
   documents in the collection.
 
@@ -53,3 +53,13 @@ collection with ``Canada`` in the ``countries`` field.
 
 .. literalinclude:: /code-snippets/usage-examples/count.js
   :language: javascript
+
+If you run the sample code above, you should see output that resembles the
+following:
+
+.. code-block:: none
+
+   Estimated number of documents in the movies collection: 23541
+   Number of movies from Canada: 1349
+
+