Fix markup.
diff --git a/Doc/library/operator.rst b/Doc/library/operator.rst
index 1cd87fc..877a790 100644
--- a/Doc/library/operator.rst
+++ b/Doc/library/operator.rst
@@ -238,8 +238,8 @@
.. function:: length_hint(obj, default=0)
Return an estimated length for the object *o*. First trying to return its
- actual length, then an estimate using ``__length_hint__``, and finally
- returning the default value.
+ actual length, then an estimate using :meth:`object.__length_hint__`, and
+ finally returning the default value.
.. versionadded:: 3.4