Improve docs readability

Author: FBumann

mkdocs.yml

@@ -90,7 +90,6 @@ theme:
     - navigation.tabs
     - navigation.tabs.sticky
     - navigation.sections
-    - navigation.expand  # Expand navigation by default
     - navigation.path  # Show breadcrumb path
     - navigation.prune  # Only render visible navigation
     - navigation.indexes
@@ -99,7 +98,6 @@ theme:
 
     # Table of contents
     - toc.follow
-    - toc.integrate  # Integrate TOC into navigation (optional)
 
     # Search
     - search.suggest
@@ -130,7 +128,7 @@ markdown_extensions:
   - toc:
       permalink: true
       permalink_title: Anchor link to this section
-      toc_depth: 3
+      toc_depth: 2
 
   # Code blocks
   - pymdownx.highlight: