discourse/app/assets/javascripts/admin/addon/routes/admin-watched-words-index.js

import DiscourseRoute from "discourse/routes/discourse";

export default DiscourseRoute.extend({
  beforeModel() {
    this.replaceWith(
      "adminWatchedWords.action",
      this.modelFor("adminWatchedWords")[0].nameKey
    );
  },
});