Linked articles app and markdownx into project urls.

config/urls.py

@@ -15,8 +15,10 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.contrib import admin
-from django.urls import path
+from django.urls import path, include
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('articles/', include('articles.urls', namespace='articles')),
+    path('markdownx/', include('markdownx.urls')),
 ]