[FIX] mass_mailing: make sure droplet obvious next to title

The mass_mailing tour had a droplet to the right of the mailing's title,
which was not so obvious to the eye so this moves it to the bottom.

task-2778417

X-original-commit: f6d69879ca6c55e6dd29387820383e069eccad07
Part-of: odoo/odoo#85934

addons/mass_mailing/static/src/js/tours/mass_mailing_tour.js

@@ -28,7 +28,7 @@ odoo.define('mass_mailing.mass_mailing_tour', function (require) {
     }, {
         trigger: 'input[name="subject"]',
         content: Markup(_t('Pick the <b>email subject</b>.')),
-        position: 'right',
+        position: 'bottom',
         run: 'text ' + now.format("MMMM") + " Newsletter",
     }, {
         trigger: 'div[name="contact_list_ids"] > .o_input_dropdown > input[type="text"]',