docs: fix broken ASCII flow diagram on homepage

Author: alekspetrov

docs/content/index.mdx

@@ -16,10 +16,8 @@ Pilot is an autonomous development pipeline with **260+ features** production-re
 {/* ILLUSTRATION: Hero — Ticket → Pilot → PR flow diagram */}
 
 ```
-┌─────────────┐      ┌─────────────┐      ┌ ─ ─ ─ ─ ─ ─┐      ┌─────────────┐
-│   Ticket    │ ───▶ │   Pilot     │ ───▶   Review (opt) ───▶ │   Ship      │
-│ (GitHub/GL) │      │  (executes) │      │  (You)      │      │  (Merge)    │
-└─────────────┘      └─────────────┘      └ ─ ─ ─ ─ ─ ─┘      └─────────────┘
+Ticket          Pilot           Review          Ship
+(GitHub/GL)  →  (executes)  →   (You)    →     (Merge)
 ```
 
 No prompting. No babysitting. Label a ticket, get a PR or a release.