Plugin instead of pluginS.

feeds_ui/feeds_ui.admin.inc

@@ -174,7 +174,7 @@ function feeds_ui_build_plugin_form(&$form_state, $feed) {
     '#type' => 'fieldset',
     '#title' => t('Plugins'),
   );
-  $form['plugins'] += $feed->pluginsForm($form_state);
+  $form['plugins'] += $feed->pluginForm($form_state);
   $form['submit'] = array(
     '#type' => 'submit',
     '#value' => t('Save'),

includes/feed.inc

@@ -83,7 +83,7 @@ class Feed extends FeedsConfigurable {
   /**
    * Feed class specific plugin form.
    */
-  public function pluginsForm(&$form_state) {
+  public function pluginForm(&$form_state) {
     $form = array();
     $plugins = feeds_get_plugins();
     $form['fetcher'] = array(