capitalize headings

README.md

@@ -58,7 +58,7 @@ This fleet doesn't just talk about that model — the four trust boundaries abov
 
 Full breakdown — the mesh-vs-VPN reasoning, the complete policy model (groups, scoped keys, peer approval, posture checks), the real bring-up story, and live evidence straight from the running system: [docs/netbird-zero-trust.md](docs/netbird-zero-trust.md).
 
-## Architecture at a Glance
+## Architecture At a Glance
 
 ![Architecture Overview](assets/architecture-overview.svg)
 Solid arrows are hard dependencies — the target has to be reachable for the source to function. Dashed arrows are secondary relationships (request routing like "proxies"/"auth", or async telemetry reporting) that don't block the source if the target's unavailable. Full breakdown of all 8 traffic laws (ingress, east-west, secrets, DNS, observability, notifications, CI/CD, management) with the actual trust-boundary reasoning: [docs/architecture-overview.md](docs/architecture-overview.md).