Fix #83: Improve documentation of replacement strategy.
diff --git a/docs/index.rst b/docs/index.rst
index fe05736..0a2547e 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -30,9 +30,9 @@
:class:`Cache`, which in turn derives from
:class:`collections.MutableMapping`, and provide :attr:`maxsize` and
:attr:`currsize` properties to retrieve the maximum and current size
-of the cache. When a cache is full, :meth:`setitem` calls
-:meth:`popitem` repeatedly until there is enough room for the item to
-be added.
+of the cache. When a cache is full, :meth:`Cache.__setitem__()` calls
+:meth:`self.popitem()` repeatedly until there is enough room for the
+item to be added.
All cache classes accept an optional `missing` keyword argument in
their constructor, which can be used to provide a default *factory
