Add to side navigation [netlify-build]

Author: pwseg

src/_data/sidenav/main.yml

@@ -596,6 +596,15 @@ sections:
       title: System for Cross-domain Identity Management (SCIM) Configuration Guide
     - path: /segment-app/iam/mfa
       title: Multi-Factor Authentication (MFA)
+  - section_title: Extensions
+    slug: segment-app/extensions
+    section:
+    - path: /segment-app/extensions
+      title: Extensions Overview
+    - path: /segment-app/extensions/dbt
+      title: dbt
+    - path: /segment-app/extensions/git
+      title: Git
   - path: /segment-app/iam/secure-password
     title: Picking a Secure Password
   - path: /segment-app/set-up-envs