Update docs link to current domain. Link to HTTPS by default

Author: Brianmitchtay

includes/class-wc-subscriptions-synchroniser.php

@@ -200,7 +200,7 @@ public static function add_settings( $settings ) {
 				'name' => __( 'Synchronisation', 'woocommerce-subscriptions' ),
 				'type' => 'title',
 				// translators: placeholders are opening and closing link tags
-				'desc' => sprintf( _x( 'Align subscription renewal to a specific day of the week, month or year. For example, the first day of the month. %1$sLearn more%2$s.', 'used in the general subscription options page', 'woocommerce-subscriptions' ), '<a href="' . esc_url( 'http://docs.woocommerce.com/document/subscriptions/renewal-synchronisation/' ) . '">', '</a>' ),
+				'desc' => sprintf( _x( 'Align subscription renewal to a specific day of the week, month or year. For example, the first day of the month. %1$sLearn more%2$s.', 'used in the general subscription options page', 'woocommerce-subscriptions' ), '<a href="' . esc_url( 'https://woocommerce.com/document/subscriptions/renewal-synchronisation/' ) . '">', '</a>' ),
 				'id'   => self::$setting_id . '_title',
 			),