Docs: Correct various documentation around object and stdClass types.

See #37770


git-svn-id: https://develop.svn.wordpress.org/trunk@38369 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-oembed.php

@@ -556,7 +556,7 @@ class WP_oEmbed {
 	 * @access private
 	 *
 	 * @param string $response_body
-	 * @return object|false
+	 * @return stdClass|false
 	 */
 	private function _parse_xml_body( $response_body ) {
 		if ( ! function_exists( 'simplexml_import_dom' ) || ! class_exists( 'DOMDocument', false ) )