Index: src/wp-admin/includes/post.php
===================================================================
--- src/wp-admin/includes/post.php	(revision 38271)
+++ src/wp-admin/includes/post.php	(working copy)
@@ -1207,9 +1207,9 @@
  * @since 2.5.0
  *
  * @param int    $id    Post ID or post object.
- * @param string $title Optional. Title. Default null.
- * @param string $name  Optional. Name. Default null.
- * @return array Array with two entries of type string.
+ * @param string $title Optional. Title to override the post's current title when generating the post name. Default null.
+ * @param string $name  Optional. Name to override the post name. Default null.
+ * @return array Array containing the sample permalink with placeholder for the post name, and the post name.
  */
 function get_sample_permalink($id, $title = null, $name = null) {
 	$post = get_post( $id );
@@ -1270,7 +1270,7 @@
 	 *
 	 * @since 4.4.0
 	 *
-	 * @param string  $permalink Sample permalink.
+	 * @param array   $permalink Array containing the sample permalink with placeholder for the post name, and the post name.
 	 * @param int     $post_id   Post ID.
 	 * @param string  $title     Post title.
 	 * @param string  $name      Post name (slug).