After [32740], correct doc block typo.

See #29881.

Built from https://develop.svn.wordpress.org/trunk@32741


git-svn-id: http://core.svn.wordpress.org/trunk@32712 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-posts-list-table.php

@@ -958,7 +958,7 @@ class WP_Posts_List_Table extends WP_List_Table {
 	/**
 	 * @since 4.3.0
 	 *
-	 * @param WP_Post $post
+	 * @param WP_Post $item
 	 */
 	public function single_row_columns( $item ) {
 		list( $columns, $hidden, $sortable, $primary ) = $this->get_column_info();