update comments for use of pathconverter

Author: Valastiri

mkdocs.yml

@@ -151,8 +151,8 @@ markdown_extensions:
     emoji_index: !!python/name:materialx.emoji.twemoji
     emoji_generator: !!python/name:materialx.emoji.to_svg
   md_in_html: {} # Allows markdown to be used in HTML
-  pymdownx.pathconverter:
-    base_path: 'docs' # default: ''
+  pymdownx.pathconverter: # Allows for absolute linking of images and other assets
+    base_path: 'docs' # repository root
     relative_path: '' # default ''
     absolute: true # default: false
     tags: 'a script img link object embed'