update icons for pages

pages/mkdocs.yml

@@ -12,18 +12,19 @@ theme:
   name: material
   font: false
   palette: 
-
     # Palette toggle for light mode
     - scheme: default
       toggle:
         icon: material/brightness-7 
         name: Switch to dark mode
-
     # Palette toggle for dark mode
     - scheme: slate
       toggle:
         icon: material/brightness-4
         name: Switch to light mode
+  favicon: img/ST-black.png
+  icon:
+    logo: material/chart-tree
 
 markdown_extensions:
   - toc: