Fix: Tabs plugins is missing which leads to incorrect display

[Antonyjin]

The page doesn't display the tabs correctly because the plugin is missing.

Solution: Add the plugin in de yml file.

[github-actions[bot]]

Deployed (not pinned) on:

• https://ipfs-2.aleph.im/ipfs/QmRH6e2UoaD3ZJnvyumkDbHNj7uvuPuuD68NoRPaFR48dv
• https://beta.docs.aleph.im/ (may be overriden anytime by another PR)