Update GitLab Pages documentation to cover NFS for multi-node environments

Problem to solve

The GitLab Pages documentation does not cover configuring NFS for multi-node environments, specifically this section. While we are encouraging users to use object storage, this may not be desirable or feasible for certain customer environments.

Further details

See internal Slack thread for additional context. Some users have environments where they would prefer NFS over object storage. See internal ZD ticket. This update to documentation would be intended for support engineers and self-managed customers.

Proposal

Update Step 4 in this section to include steps for configuring NFS.

Who can address the issue

Technical writer or other qualified team member.

Other links/references