Add a link to the wiki page with more grouping suggestions.

pep-3108.txt

@@ -508,6 +508,10 @@ of various modules is already occurring.  Below is a list sectioned
 off into what types of obvious groupings there seem to be.  No name
 for the suggested package (if not already existent) is being proposed.
 
+Some other suggestions beyond the ones listed here are available at
+http://wiki.python.org/moin/CodingProjectIdeas/StandardLibrary/RestructuredStandardLibrary
+.
+
 * collections
 
   + heapq