diff --git a/_data/nav.yml b/_data/nav.yml
index 59e8616e..c78702c5 100644
--- a/_data/nav.yml
+++ b/_data/nav.yml
@@ -11,33 +11,33 @@
   - subtitle: Observability
     page: overview/observability.md
 
-- title: Observability - 120
+- title: Observability
   page: observability/observability.md
   subcategories:
-  - subtitle: Introduction -130
-    page: observability/introduction.md
+  - subtitle: Introduction
+    page: observability/introduction/introduction.md
     subcategories:
-    - subtitle: What is observability - 131
+    - subtitle: What is observability 
       page: observability/introduction/what-is-observability.md
-    - subtitle: What is metrics monitoring-132
+    - subtitle: What is metrics monitoring
       page: observability/introduction/metrics-monitoring.md
-    - subtitle: What is row level monitoring (anomalo approach)-133
+    - subtitle: What is row level monitoring (anomalo approach)
       page: observability/introduction/row-level-monitoring.md
-    - subtitle: What is Soda Agent-134
+    - subtitle: What is Soda Agent
       page: observability/introduction/soda-agent.md
-  - subtitle: Set up Agent -140
+  - subtitle: Set up Agent
     page: observability/set-up-agent.md
-  - subtitle: Set up metrics monitoring -150
+  - subtitle: Set up metrics monitoring
     page: observability/set-up-metrics-monitoring.md
-  - subtitle: Set up observability-160
+  - subtitle: Set up observability
     page: observability/set-up-metrics-monitoring.md
-  - subtitle: Configure notifications-170
+  - subtitle: Configure notifications
     page: observability/configure-notifications.md
 
-# - title: Data testing -30
+# - title: Data testing
 #   page:
 #   subcategories:
-#   - subtitle: Introduction -40
+#   - subtitle: Introduction
 #     page:
 #     subcategories:
 #     - subtitle: What is a data contract-41
@@ -61,11 +61,11 @@
 #     page:
 #     subcategories:
 #     - subtitle: Create a data contract-81
-#     page:
+#       page:
 #     - subtitle: Check missing values-82
-#     page: 
+#       page: 
 #     - subtitle: Check validity-83
-#     page:
+#       page:
 #   - subtitle: Configure notifications-90
 #     page:
 #   - subtitle: Failed rows-100