docs: add self-hosted setup page to navigation and link from overview (#2974)

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: thesandlord

fern/products/docs/docs.yml

@@ -281,7 +281,6 @@ navigation:
       - page: Set up self-hosted documentation
         path: ./pages/enterprise/self-hosted-set-up.mdx
         slug: set-up
-        hidden: true
       - page: Health check endpoints
         path: ./pages/enterprise/health-check-endpoints.mdx
   - section: Analytics & integrations

fern/products/docs/pages/enterprise/self-hosted.mdx

@@ -29,7 +29,7 @@ However, features requiring external connections aren't supported, including [As
 
 ## Setup process
 
-Fern provides your documentation site as a ready-to-run Docker container that you can deploy on your own infrastructure.
+Fern provides your documentation site as a ready-to-run Docker container that you can deploy on your own infrastructure. For detailed instructions, see [Set up self-hosted documentation](/learn/docs/self-hosted/set-up).
 
 1. **Download the Docker image** - Fern provides the location of the most up-to-date Docker image containing the documentation frontend
 1. **Upload your fern folder** - Add your documentation source files to the container