Removed a nonexistent link in the docs.

docs/topics/db/models.txt

@@ -668,13 +668,13 @@ option reference </ref/models/options>`.
 Model attributes
 ================
 
-:attr:`~objects`
-    The most important attribute of a model is the 
-    :class:`~django.db.models.Manager`, which is the interface through which 
-    database query operations are provided to Django models and is used to 
-    :ref:`retrieve the instances <retrieving-objects>` from the database. If no 
-    custom Manager is defined, the default name is ``objects``. Managers are 
-    only accessible via model classes, not the model instances. 
+``objects``
+    The most important attribute of a model is the
+    :class:`~django.db.models.Manager`. It's the interface through which
+    database query operations are provided to Django models and is used to
+    :ref:`retrieve the instances <retrieving-objects>` from the database. If no
+    custom ``Manager`` is defined, the default name is ``objects``. Managers
+    are only accessible via model classes, not the model instances.
 
 .. _model-methods: