Update patch example in docs
diff --git a/docs/patch.txt b/docs/patch.txt
index 4619b01..efbba4f 100644
--- a/docs/patch.txt
+++ b/docs/patch.txt
@@ -114,10 +114,10 @@
 .. doctest::
 
     >>> @patch('__main__.SomeClass')
-    ... def function(mock_class):
+    ... def function(normal_argument, mock_class):
     ...     print mock_class is SomeClass
     ...
-    >>> function()
+    >>> function(None)
     True