Cabal user guide's page titles and breadcrumbs wrong/misleading

The user guide displays the heading of the first section of every page as the title for the entire page both as the title of the tab and in the breadcrumbs. However this is wrong, because most pages contain multiple sections of equal rank. For example if you go to [*3. Package Concepts and Development*](https://www.haskell.org/cabal/users-guide/developing-packages.html) the title is *3.1 Quickstart* which is wrong, because the same page also contains *3.2 Package concepts* and *3.3 Developing packages*. I found this rather confusing when I was looking for a reference of all possible package attributes and figured that it's probably not in the “Quickstart” section.