Improve description of feed alias.

See http://drupal.org/node/333002 for details.

The current description does not state explicitly that the setting is meant
for _source_ path of feeds, and NOT for the _target_ alias.

Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>

Index: pathauto/pathauto.admin.inc
===================================================================
--- pathauto.orig/pathauto.admin.inc	2009-04-19 12:53:10.000000000 +0200
+++ pathauto/pathauto.admin.inc	2009-04-19 16:13:48.000000000 +0200
@@ -273,11 +273,13 @@
 
       $form[$module][$variable] = array(
         '#type' => 'textfield',
-        '#title' => t('Internal feed alias text (leave blank to disable)'),
+        '#title' => t('Feed source path (leave blank to disable feed alias generation)'),
         '#size' => 65,
         '#maxlength' => 1280,
         '#default_value' => $current,
-        '#description' => t('The text to use for aliases for RSS feeds. Examples are "feed" and "0/feed".'),
+        '#description' => t('The path provided by modules which enable RSS feeds. Examples are "feed" and "0/feed".<br />' .
+                            '<strong>NOTE</strong>: pathauto will use a <em>fixed</em> "feed" suffix in the generated aliases' .
+                            ' independently from this setting.'),
       );
     }