contributin.md: support code blocks

Signed-off-by: Yoni Golob <yoni.golob@placer.ai>

Author: yagni92

mkdocs.yml

@@ -8,4 +8,11 @@ theme:
   name: material
 
 markdown_extensions:
-  - attr_list
+  - attr_list
+  - pymdownx.highlight:
+      anchor_linenums: true
+      line_spans: __span
+      pygments_lang_class: true
+  - pymdownx.inlinehilite
+  - pymdownx.snippets
+  - pymdownx.superfences