Refactor: change Keyword class export to default

src/modules/crawl.js

-import { Keyword } from "../schemas/keyword.js";
+import Keyword from "../schemas/keyword.js";
 import puppeteer from "puppeteer";
 
 export const crawl = async (req, res) => {

src/schemas/keyword.js

-export class Keyword {
+export default class Keyword {
   constructor(title) {
     this.title = title;
-    this.views = 10;
-    this.url = "https://updown.com";
+    this.views = 0;
+    this.url = "";
   }
 }