"Pages" link cannot be accessed in frappe framework documentation

I want to report an issue with documentation, In Portal Development Guide in Frappe Framework documentation “Pages” link cannot be accessed, it’s the first item in this guide but guide starts with the “Table of Contents” section, which is 4th in the list. Looks like “Table of Contents” route has overwritten the “Pages”.

https://frappeframework.com/docs/v13/user/en/guides/portal-development