Docs: Fix typo in a comment in `WP_Customize_Manager::get_return_url()`.

Follow-up to [46754].

See #53399.
Built from https://develop.svn.wordpress.org/trunk@51730


git-svn-id: http://core.svn.wordpress.org/trunk@51336 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-customize-manager.php

@@ -4688,7 +4688,7 @@ final class WP_Customize_Manager {
 
 			/*
 			 * If the return URL is a page added by a theme to the Appearance menu via add_submenu_page(),
-			 * verify that belongs to the active theme, otherwise fall back to the Themes screen.
+			 * verify that it belongs to the active theme, otherwise fall back to the Themes screen.
 			 */
 			if ( isset( $query_vars['page'] ) && ! isset( $_registered_pages[ "appearance_page_{$query_vars['page']}" ] ) ) {
 				$return_url = admin_url( 'themes.php' );

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51729';
+$wp_version = '5.9-alpha-51730';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.