docs: add Zenith Hosting deploy option

[odpay]

hey, i work on Zenith Hosting, a startup doing one-click hosting for open source apps. we added Lychee to our marketplace, so this PR adds a small "Deploy with Zenith" badge under the "Other means of distributions" section (links to https://zenith.hosting/host/lychee).

thanks @ildyria for pointing me to the right file. we share a cut of revenue with the projects we host. happy to explain if you're curious: hello@zenith.hosting

Summary by CodeRabbit

• Documentation
  • Added a new “With Zenith (Paid)” section to the distribution options page.
  • Included a short overview of managed hosting, plus links to deploy with Zenith and learn more about its Lychee offering.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: fa93ebb7-10a2-4bf8-bcb0-07b86a1ae4aa

📥 Commits

Reviewing files that changed from the base of the PR and between 2d6edc9 and 8332d78.

📒 Files selected for processing (1)

• src/content/docs/docs/administration/advanced-setups.md

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📝 Walkthrough

Walkthrough

Added a new "With Zenith (Paid)" subsection to the advanced setups documentation page, describing Zenith's one-click managed hosting with a deploy button and a link to its Lychee offering.

Changes

Documentation update

Layer / File(s)	Summary
Add Zenith deployment subsection src/content/docs/docs/administration/advanced-setups.md	Adds an introductory paragraph, a "Deploy with Zenith" button link, and a link to Zenith's Lychee offering to the deployment options page.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Poem

A hop, a skip, a doc so bright,
Zenith joins the deploy delight,
One click to host, no fuss, no fright,
This bunny reviews with pure delight! 🐇✨

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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Warning

⚠️ This pull request has been flagged as potential spam (promotional) by CodeRabbit slop detection and should be reviewed carefully.