PR review fixes

Author: Chris Cho

source/fundamentals/data-formats/document-data-format-extended-json.txt

@@ -137,7 +137,7 @@ an example Extended JSON string into a ``Document`` object using the
    String ejsonStr = "{ \"_id\": { \"$oid\": \"507f1f77bcf86cd799439011\"}," +
                      "\"myNumber\": {\"$numberLong\": \"4794261\" }}}";
 
-   Document doc = new Document(Document.parse(ejsonStr));
+   Document doc = Document.parse(ejsonStr);
    System.out.println(doc);
 
 The output of the code above resembles the following:
@@ -203,31 +203,31 @@ Using the Document Classes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 You can write an Extended JSON string from an instance of ``Document`` or
-``BsonDocument`` by calling the ``toJson()`` method, passing it an instance of
-``JsonWriterSettings`` to specify the Extended JSON format.
+``BsonDocument`` by calling the ``toJson()`` method, optionally passing it an
+instance of ``JsonWriterSettings`` to specify the Extended JSON format.
 
-In this example, we output the Extended JSON in the "Shell" format.
+In this example, we output the Extended JSON in the "Relaxed" format.
 
 .. code-block:: java
 
    Document myDoc = new Document();
    myDoc.append("_id", new ObjectId("507f1f77bcf86cd799439012")).append("myNumber", 11223344);
 
-   JsonWriterSettings settings = JsonWriterSettings.builder().outputMode(JsonMode.SHELL).build();
+   JsonWriterSettings settings = JsonWriterSettings.builder().outputMode(JsonMode.RELAXED).build();
    System.out.println(doc.toJson(settings));
 
 The output of this code example resembles the following:
 
 .. code-block:: none
    :copyable: false
 
-   {"_id": ObjectId("507f1f77bcf86cd799439011"), "myNumber": NumberLong(4794261)}
+   {"_id": {"$oid": "507f1f77bcf86cd799439012"}, "myNumber": 11223344}
 
 Using the BSON Library
 ~~~~~~~~~~~~~~~~~~~~~~
 
-You can also read an Extended JSON string into Java objects using the BSON
-library directly with the :java-docs:`JsonWriter </apidocs/bson/org/bson/json/JsonWriter.html>`
+You can also output an Extended JSON string from data in Java objects using
+the BSON library with the :java-docs:`JsonWriter </apidocs/bson/org/bson/json/JsonWriter.html>`
 class. To construct an instance of ``JsonWriter``, pass a subclass of a Java
 ``Writer`` to specify how you want to output the Extended JSON. You can
 optionally pass a :java-docs:`JsonWriterSettings </apidocs/bson/org/bson/json/JsonWriterSettings.html>`