Incorrect link to Clock

[rgaudin]

We're incorrectly adding the link to clock.{fqdn} instead of hwclock.{fqdn}.

adminui/src/adminui/frontend.py

Lines 28 to 34 in 4dc99f2

	if context.has_clock:
	links.append(
	Link(
	url=f"http://clock.{context.fqdn}/",
	title="Clock",
	text="Update date and time as seen by the Hotspot.",
	)

We should get the subdomain from compose as for the rest anyway.