fix misleading email format (7w1#32)

OE1KHZ · web-flow · commit 0d6676233c96 · 2025-11-29T08:17:46.000+08:00
Sygnal already adds `mailto:` by itself. When added manually, apple will error out with `403: BadJwtToken`. Hence the mailto should be removed :)
diff --git a/docs/sygnal-setup.md b/docs/sygnal-setup.md
@@ -128,7 +128,7 @@ apps:
     # This path is *inside the container*. We will map our generated key to it.
     vapid_private_key: /data/private_key.pem
     # An email for VAPID contact details
-    vapid_contact_email: mailto:your-email@your-domain.com
+    vapid_contact_email: your-email@your-domain.com
 ```
 
 #### 3.3. Caddy Configuration (`Caddyfile`)
