some code-analysis reclamations fixed.

code-analysis OK up to: T100, S100, S101, C815, C812

docs/source/howtos/howto_extend_the_comment_form.txt

@@ -47,7 +47,7 @@ comment form with the "website" field::
     from zope import schema
 
     from zope.annotation import factory
-    from zope.component import adapts
+    from zope.component import adapter
     from zope.interface import Interface
     from zope.publisher.interfaces.browser import IDefaultBrowserLayer
 
@@ -61,9 +61,9 @@ comment form with the "website" field::
         website = schema.TextLine(title=u"Website", required=False)
 
     # Persistent class that implements the ICommentExtenderFields interface
+    @adapter(Comment)
     class CommentExtenderFields(Persistent):
         interface.implements(ICommentExtenderFields)
-        adapts(Comment)
         website = u""
 
     # CommentExtenderFields factory
@@ -71,9 +71,8 @@ comment form with the "website" field::
 
     # Extending the comment form with the fields defined in the
     # ICommentExtenderFields interface.
+    @adapter(Interface, IDefaultBrowserLayer, CommentForm)
     class CommentExtender(extensible.FormExtender):
-        adapts(Interface, IDefaultBrowserLayer, CommentForm)
-
         fields = Fields(ICommentExtenderFields)
 
         def __init__(self, context, request, form):