Add amp-onboarding-wizard submenu page on options.php menu

Author: thelovekesh

src/Admin/OnboardingWizardSubmenu.php

@@ -40,7 +40,7 @@ public static function get_registration_action() {
 	 */
 	public function register() {
 		add_submenu_page(
-			'',
+			'options.php',
 			__( 'AMP Onboarding Wizard', 'amp' ),
 			__( 'AMP Onboarding Wizard', 'amp' ),
 			'manage_options',