docs/concepts/typebox.md: removed the duplicate '# TypeBox as protocol
source of truth' H1 (Mintlify already renders the title from
frontmatter; in-body H1s produce brittle anchors). Also removed the
'Last updated: 2026-01-10' timestamp line because date-stamped
freshness markers drift silently and conflict with our brownfield
maintenance model.
docs/install/kubernetes.md: removed the duplicate '# OpenClaw on
Kubernetes' H1.
docs/install/azure.md: removed the duplicate '# OpenClaw on Azure Linux
VM' H1.
docs/install/podman.md: renamed the '## Podman + Tailscale' heading to
'## Podman and Tailscale' per docs/CLAUDE.md heading-hygiene rules
(plus signs collapse during Mintlify anchor generation just like
ampersands and apostrophes). Kept the explicit
<a id='podman--tailscale'></a> anchor and updated the inline 'Podman +
Tailscale' link text to match the new heading so the cross-link still
works.
