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/configparser.rst b/Doc/library/configparser.rst
index 0c5bb15..2eeefb0 100644
--- a/Doc/library/configparser.rst
+++ b/Doc/library/configparser.rst
@@ -27,10 +27,10 @@
 can use this to write Python programs which can be customized by end users
 easily.
 
-.. warning::
+.. note::
 
-   This library does *not* interpret or write the value-type prefixes used in the
-   Windows Registry extended version of INI syntax.
+   This library does *not* interpret or write the value-type prefixes used in
+   the Windows Registry extended version of INI syntax.
 
 The configuration file consists of sections, led by a ``[section]`` header and
 followed by ``name: value`` entries, with continuations in the style of