docs: various

- disable navigation.tabs

- enable toc.integrate and disable toc_depth

- move contact and security under about

mkdocs.yml

@@ -17,13 +17,17 @@ theme:
     - content.tabs.link
     - navigation.expand
     - navigation.instant
-    - navigation.tabs
     - navigation.tracking
+    - toc.integrate
   favicon: nix-community-logo.png
   logo: nix-community-logo.png
   icon:
     repo: fontawesome/brands/github
 
+markdown_extensions:
+  - toc:
+      toc_depth: 0
+
 extra:
   social:
     - icon: fontawesome/brands/github