Fix get articles

src/app.ts

-import express from 'express';
+ import express from 'express';
 import { Application, RequestHandler } from 'express';
 import { AppInit } from './interfaces/AppInit.interface';
 import { IRoute } from './interfaces/IRoute.interface';

src/controllers/article.controller.ts

@@ -9,7 +9,7 @@ export class ArticleController {
   }
 
   getAllArticles: RequestHandler = (req, res): void => {
-    const articles = this.service.getAllArticles;
+    const articles = this.service.getAllArticles();
     res.send(articles);
   };