70d9352cec
This commit removes two redundant pages and adds the related redirections.
- The Tutorials page is a duplicate and is not maintained anymore.
Having it in the docs hurts the SEO of the up-to-date Tutorias page.
- The Contributing page is not helpful. Contributions-related information
should be maintained in the project README file.
Fixes https://github.com/scylladb/scylladb/issues/17279
Fixes https://github.com/scylladb/scylladb/issues/24060
Closes scylladb/scylladb#24090
(cherry picked from commit eed8373b77)
Closes scylladb/scylladb#24220