[FIX] project: fix traceback in project public rating

Purpose of the task is, clicking on rating from
publicly rating project dashboard it will produce the
traceback.

so fix the traceback by fixing typo in portal rating.

Task-2145507

closes odoo/odoo#41005

Closes: #41005
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

addons/project/static/src/js/portal_rating.js

@@ -14,7 +14,7 @@ publicWidget.registry.ProjectRatingImage = publicWidget.Widget.extend({
         this.$el.popover({
             placement: 'bottom',
             trigger: 'hover',
-            html: 'true',
+            html: true,
             content: function () {
                 var $elem = $(this);
                 var id = $elem.data('id');