Update.

manual_src/pages/tutorials/database-app.html

@@ -4,7 +4,7 @@
 {% set page_title = "Database Application" %}
 {% set breadcrumb = [{"url": "tutorials/index.html", "title": "Tutorials"}, {"title": "Database App"}] %}
 {% set prev_page = {"url": "tutorials/websocket-chat.html", "title": "WebSocket Chat"} %}
-{% set next_page = {"url": "tutorials/template-rendering.html", "title": "Template Rendering"} %}
+{% set next_page = {"url": "tutorials/dataset-orm.html", "title": "Dataset ORM"} %}
 
 {% block article %}
                 <h1>Database Application</h1>