[FIX] website_event_sale: test updated for pricelist fix

Rev. f9ee454d42 fixed the pricelist
application in website_event_sale in 8.0, but the 9.0 test
contained a hardcoded price matching the old computation.
The test failed when the fix was forward-ported to 9.0.

addons/website_event_sale/static/src/js/website.tour.event_sale.js

@@ -83,8 +83,8 @@ base.ready().done(function () {
                 },
             },
             {
-                title:     "Check that the subtotal is 5,500.0", 
-                element:   '#order_total_untaxed .oe_currency_value:contains("5,500.0")',
+                title:     "Check that the subtotal is 3,856.96",
+                element:   '#order_total_untaxed .oe_currency_value:contains("3,856.96")',
             },
             {
                 title:     "Select `Wire Transfer` payment method",