Minor docs syntax fixes

Author: jonashaag

docs/source/reference/model-options.rst

@@ -1,7 +1,7 @@
 Model Options
 =============
 
-In addition to Django's `default Meta options`, Django MongoDB Engine supports
+In addition to Django's `default Meta options`_, Django MongoDB Engine supports
 various options specific to MongoDB through a special ``class MongoMeta``. ::
 
    class FooModel(models.Model):

docs/source/reference/settings.rst

@@ -1,7 +1,7 @@
 Settings
 ========
 
-TODO fix highlighting
+.. TODO fix highlighting
 
 Connection Settings
 -------------------
@@ -51,7 +51,7 @@ this configuration passes ``safe=True, w=3`` as keyword arguments to each of
 
 Get a more fine-grained setup by introducing another layer to this dict:
 
-.. code-block:: py
+.. code-block:: python
 
    'OPTIONS' : {
        'OPERATIONS' : {