[FIX] website_sale: adapt test to demo data update

`stock` module rename then main company, which forbid test to complete
successfully.

addons/website_sale/static/src/js/website_sale_tour_shop_mail.js

@@ -83,7 +83,7 @@ tour.register('shop_mail', {
     },
     {
         content: "click on the first email",
-        trigger: '.o_data_cell:contains("YourCompany Order")',
+        trigger: '.o_data_cell:contains("(Ref SO")',
     },
     {
         content: "check it's the correct email, and the URL is correct too",