Fix PHI validation: Replace real email with example.com and remove Calendly link

Co-authored-by: aurelianware <194855645+aurelianware@users.noreply.github.com>

Author: Copilot

scripts/seed-demo-tenant.json

@@ -13,6 +13,6 @@
   "updatedAt": "2026-02-08T00:00:00Z",
   "adminEmails": [
     "demo@cloudhealthoffice.com",
-    "admin@demohealthplan.com"
+    "admin@example.com"
   ]
 }

site/assessment.html

@@ -482,7 +482,6 @@ <h3>Immediate Actions</h3>
 <ol>
 <li><p><strong>Schedule Demo</strong></p>
 <ul>
-<li><a href="https://calendly.com/mark-cloudhealthoffice" target="_blank" rel="noopener noreferrer">Book 30-minute platform walkthrough</a></li>
 <li>Review your specific payer requirements</li>
 <li>See live deployment demonstration</li>
 </ul>