[1.7.x] Removed an unnecessary anchor in the docs.

Backport of a06808d3 from master

docs/ref/contrib/admin/index.txt

@@ -1983,8 +1983,6 @@ The ``InlineModelAdmin`` class adds:
     :meth:`InlineModelAdmin.get_extra` also allows you to customize the number
     of extra forms.
 
-    .. _ref-contrib-admin-inline-max-num:
-
 .. attribute:: InlineModelAdmin.max_num
 
     This controls the maximum number of forms to show in the inline. This

docs/releases/1.2.txt

@@ -721,8 +721,9 @@ value and interpretation of the ``max_num`` parameter to the
 :ref:`django.forms.formsets.formset_factory() <formsets-max-num>` and
 :ref:`django.forms.models.modelformset_factory()
 <model-formsets-max-num>` functions has changed slightly. This
-change also affects the way the ``max_num`` argument is :ref:`used for
-inline admin objects <ref-contrib-admin-inline-max-num>`
+change also affects the way the
+:attr:`~django.contrib.admin.InlineModelAdmin.max_num` argument is used for
+inline admin objects.
 
 Previously, the default value for ``max_num`` was ``0`` (zero).
 FormSets then used the boolean value of ``max_num`` to determine if a