mgr/dashboard: update legal links
3 - minor
Pull request ID:
Crash signature (v1):
Crash signature (v2):
The legal links in the login page are outdated:
- "Help" is broken, and it should probably point to docs.ceph.com
- "Security" is not broken but points to a ceph.io page that in turns point to a docs.ceph.com/.../security, so a direct link would make more sense.
- "Trademarks" is broken and should point to https://ceph.io/en/trademarks/.