ca83da91d1
This commit modifies the Features page in the following way:
- It adds a short introduction and descriptions to each listed feature.
- It hides the ToC (required to control and modify the information on the page,
e.g., to add descriptions, have full control over what is displayed, etc.)
- Removes the info about Enterprise features (following the request not to include
Enterprise info in the OSS docs)
Fixes https://github.com/scylladb/scylladb/issues/20617
Blocks https://github.com/scylladb/scylla-enterprise/pull/4711
(cherry picked from commit da8047a834)
Closes scylladb/scylladb#20811