Use a docs-specific variable for the `link_category` hook docs in wp-admin/bookmarks-template.php.

See #25364.


git-svn-id: https://develop.svn.wordpress.org/trunk@26980 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/bookmark-template.php

@@ -233,7 +233,7 @@ function wp_list_bookmarks($args = '') {
 			 *
 			 * @since 2.2.0
 			 *
-			 * @param string $cat->name The category name of bookmarks.
+			 * @param string $cat_name The category name of bookmarks.
 			 */
 			$catname = apply_filters( 'link_category', $cat->name );