tests: Fix missing call to `done` callback

tests/backend/specs/contentcollector.js

@@ -284,7 +284,7 @@ describe(__filename, function () {
         });
       }
 
-      it(testObj.description, function (done) {
+      it(testObj.description, async function () {
         const $ = cheerio.load(testObj.html); // Load HTML into Cheerio
         const doc = $('body')[0]; // Creates a dom-like representation of HTML
         // Create an empty attribute pool