Add code line highlighing

mkdocs.yml

@@ -109,6 +109,11 @@ markdown_extensions:
       emoji_generator: !!python/name:material.extensions.emoji.to_svg
   - pymdownx.saneheaders
   - pymdownx.keys
+  - pymdownx.highlight:
+      anchor_linenums: true
+      line_spans: __span
+      pygments_lang_class: true
+  - pymdownx.inlinehilite
   #- pymdownx.magiclink:
       #repo_url_shortener: true
       #repo_url_shorthand: false