[IMP] web: correct typos in comments

closes odoo/odoo#39658

Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

addons/web/static/src/js/core/mvc.js

@@ -81,7 +81,7 @@ var Model = Class.extend(mixins.EventDispatcherMixin, ServicesMixin, {
 });
 
 /**
- * Only responsability of this component is to display the user interface, and
+ * Only responsibility of this component is to display the user interface, and
  * react to user changes.
  *
  * @class Renderer

addons/web/static/src/js/fields/abstract_field.js

@@ -281,7 +281,7 @@ var AbstractField = Widget.extend({
      * value was changed by the user. This is checked before saving a record, by
      * the view.
      *
-     * Note: this is the responsability of the view to check that required
+     * Note: this is the responsibility of the view to check that required
      * fields have a set value.
      *
      * @returns {boolean} true/false if the widget is valid