diff --git a/book/src/SUMMARY.md b/book/src/SUMMARY.md
index 5146164..135ce27 100644
--- a/book/src/SUMMARY.md
+++ b/book/src/SUMMARY.md
@@ -1,9 +1,9 @@
 # Summary
 
--   [Introduction](./intro.md)
--   [Metrics](./metrics.md)
--   [FAQs](./faq.md)
--   [Development Environment](./setup.md)
--   [Contributing](./contributing.md)
--   [Protocol Developers](./developers.md)
-    -   [Architecture](./architecture.md)
+- [Introduction](./intro.md)
+- [Metrics](./metrics.md)
+- [FAQs](./faq.md)
+- [Development Environment](./setup.md)
+- [Contributing](./contributing.md)
+- [Protocol Developers](./developers.md)
+  - [Architecture](./architecture.md)