fix

readme.md

@@ -33,3 +33,13 @@ $ fly deploy
 $ flyctl ssh console
 $ /usr/bin/create-account -config /etc/dendrite/dendrite.yaml -username USERNAME -password xxx -admin
 ```
+
+### domain
+
+> https://example.com/.well-known/matrix/server
+
+```
+{
+    "m.server": "$app.fly.dev:8448"
+}
+```