Demote warnings to notices where appropriate, following the goal that as few "red box" warnings
should clutter the docs as possible. Part 1: stuff that gets merged to Py3k.
diff --git a/Doc/library/marshal.rst b/Doc/library/marshal.rst
index a9d6ea8..84fb138 100644
--- a/Doc/library/marshal.rst
+++ b/Doc/library/marshal.rst
@@ -85,7 +85,7 @@
file must be an open file object opened in binary mode (``'rb'`` or
``'r+b'``).
- .. warning::
+ .. note::
If an object containing an unsupported type was marshalled with :func:`dump`,
:func:`load` will substitute ``None`` for the unmarshallable type.