DOC: clean up some remaining mailing list links

In response to Eric's question, I did a grep check and realized I'd
missed some.

Author: matthew-brett

doc/source/gitwash/this_project.inc

@@ -1,3 +1,3 @@
 .. nibabel
 .. _nibabel: http://nipy.org/nibabel
-.. _`nibabel mailing list`: http://mail.scipy.org/mailman/listinfo/nipy-devel
+.. _`nibabel mailing list`: https://mail.python.org/mailman/listinfo/neuroimaging

doc/source/index.rst

@@ -84,7 +84,7 @@ If you have problems installing the software or questions about usage,
 documentation or anything else related to NiBabel, you can post to the NiPy
 mailing list.
 
-:Mailing list:  nipy-devel@neuroimaging.scipy.org [subscription_, archive_]
+:Mailing list:  neuroimaging@python.org [subscription_, archive_]
 
 We recommend that anyone using NiBabel subscribes to the mailing list.  The
 mailing list is the preferred way to announce changes and additions to the