updated a few docstrings and removed contrib

--HG--
branch : trunk
diff --git a/jinja2/filters.py b/jinja2/filters.py
index c042a5b..137f536 100644
--- a/jinja2/filters.py
+++ b/jinja2/filters.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 """
-    jinja.filters
-    ~~~~~~~~~~~~~
+    jinja2.filters
+    ~~~~~~~~~~~~~~
 
     Bundled jinja filters.