This commit fixes the layout of the Reference
page. Previously, the toctree level was "2",
which made the page hard to navigate.
This PR changes the level to "1".
In addition, the capitalization of page
titles is fixed.
This is a follow-up PR to the ones that
created and updated the Reference section.
It must be backported to branch-5.4.
Closesscylladb/scylladb#15830
Fixes https://github.com/scylladb/scylladb/issues/12758
This commit adds a new page with a matrix that shows
on which ScyllaDB Open Source versions we based given
ScyllaDB Enterprise versions.
The new file is added to the newly created Reference
section.
Closes#13230
