chore: added link for api reference

Author: Tony133

src/app/homepage/menu/menu.component.ts

@@ -287,6 +287,10 @@ export class MenuComponent implements OnInit {
       isOpened: false,
       path: '/migration-guide',
     },
+    {
+      title: 'API Reference',
+      externalUrl: 'https://api-references-nestjs.netlify.app/',
+    },
     {
       title: 'Official courses',
       externalUrl: 'https://courses.nestjs.com/',