What
@fresh-fireman-491 said, and also this:
Add from Site Map
You can also add multiple web pages to your Knowledge Base by entering the Site Map URL. This file contains a list of URLs that you want to add to your Knowledge Base. Botpress will automatically retrieve the content from these web pages and add them to your Knowledge Base.
https://botpress.com/docs/cloud/studio/knowledge-base/#2-web-pages