Apply suggestion from @westonruter

Co-authored-by: Weston Ruter <[email protected]>

Author: adamsilverstein

src/wp-includes/comment.php

@@ -4212,7 +4212,7 @@ function wp_create_initial_comment_meta() {
 						'items' => array(
 							'type'       => 'object',
 							'properties' => array(
-								'userId' => array(
+								'author' => array(
 									'type' => 'integer',
 								),
 								'date'   => array(