Add link to the buffer protocol description from the memory description.
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index b2931ae..e981214 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -2279,8 +2279,8 @@
===============
:class:`memoryview` objects allow Python code to access the internal data
-of an object that supports the buffer protocol without copying. Memory
-is generally interpreted as simple bytes.
+of an object that supports the :ref:`buffer protocol <bufferobjects>` without
+copying. Memory is generally interpreted as simple bytes.
.. class:: memoryview(obj)