Add noindex to template

[chmac]

I added the noindex HTML tag to the template file, figured while I was fixing #69 I might as well have a go at this, as per my request in #130.

Description

Test plan

Possible regressions or performance implications

Dependencies

Reviewer checklist

• Code is well-designed and only as complicated as necessary.
• Good experience for clients of code.
• Existing use-cases are implemented, not potential future ones (YAGNI).
• Clear and consistent naming.
• Comments and documentation are clear, useful, and explain why instead of what.
• Sensible and attractive UI changes, if any.

[vercel]

@chmac is attempting to deploy a commit to the Rocky Team on Vercel.

A member of the Team first needs to authorize it.