MW PR fixes 1

Author: rustagir

docs/eloquent-models/model-class.txt

@@ -297,13 +297,13 @@ MongoDB.
 When you apply the ``DocumentModel`` trait to a model class, you must
 declare the following properties in your class:
 
-- ``$primaryKey``: defines the field that uniquely identifies a MongoDB document.
-- ``$keyType``: defines the type of the primary key value.
+- ``$primaryKey``: Defines the field that uniquely identifies a MongoDB document
+- ``$keyType``: Defines the type of the primary key value
 
 Extended Class Example
 ~~~~~~~~~~~~~~~~~~~~~~
 
-In this example, you create a ``Planet`` model class that extends the
+This example creates a ``Planet`` model class that extends the
 ``CelestialBody`` class from a package called ``ThirdPartyPackage``. The
 ``Post`` class includes the ``DocumentModel`` trait and defines
 properties including ``$primaryKey`` and ``$keyType``: