Updated Home (markdown)

Home.md

@@ -34,7 +34,7 @@ with very large archives.
 ## Where to get more information
 
 * This Wiki (of course)
-* libarchive-discuss@googlegroups.com mailing list
+* The `doc` directory in the source distribution
 * [[Extensive manpages|ManualPages]] are included with the distribution.
 
 ## How to contribute
@@ -44,9 +44,7 @@ If you need ideas, take a peek at the [[WishList]] and
 the [[internals documentation|LibarchiveInternals]].
 
 If you aren't able to help with C coding, we still appreciate
-volunteers to help improve this Wiki documentation, answer
-questions on the
-[[mailing list|http://groups.google.com/group/libarchive-discuss]],
+volunteers to help improve documentation
 and help test libarchive as it continues to evolve.