Migrated the shortener.ts server

server/shortener.ts

@@ -14,7 +14,7 @@ app.get("*", async (req: Request, res: Response) => {
         redirect_url = found.originalUrl;
 
         // Increment clicks
-        await found.updateOne({$inc: {clicks: 1}}).exec();
+        await found.increment({clicks: +1});
     }
 
     // Redirect to url