FIX: Deprecation

assets/javascripts/initializers/add-holiday-flair.js.es6

@@ -1,11 +1,12 @@
 import { withPluginApi } from "discourse/lib/plugin-api";
 import { iconHTML } from "discourse-common/lib/icon-library";
 import { later, cancel } from "@ember/runloop";
+import getURL from "discourse-common/lib/get-url";
 
 function applyFlairOnMention(element, username) {
   if (!element) return;
 
-  const href = `${Discourse.BaseUri}/u/${username.toLowerCase()}`;
+  const href = getURL(`/u/${username.toLowerCase()}`);
   const mentions = element.querySelectorAll(`a.mention[href="${href}"]`);
 
   mentions.forEach(mention => {