Fix doc.

feeds.api.php

@@ -70,7 +70,7 @@ function hook_feeds_term_processor_targets_alter(&$targets, $vid) {
  * Alter mapping targets for Data table entries. Use this hook to add additional
  * target options to the mapping form of Data processor.
  */
-function hook_feeds_data_processor_targets(&$fields, $data_table) {
+function hook_feeds_data_processor_targets_alter(&$fields, $data_table) {
   if ($data_table == mymodule_base_table()) {
     $fields['mytable:category'] = array(
       'name' => t('Category'),