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/httplib.rst b/Doc/library/httplib.rst
index 874fd54..e48c95c 100644
--- a/Doc/library/httplib.rst
+++ b/Doc/library/httplib.rst
@@ -68,9 +68,9 @@
    formatted file that contains your private key. *cert_file* is a PEM formatted
    certificate chain file.
 
-   .. warning::
+   .. note::
 
-      This does not do any certificate verification!
+      This does not do any certificate verification.
 
    .. versionadded:: 2.0