Read the Docs temporary fix

disabling the emoji feature of pymdownx as recommended here: readthedocs/readthedocs.org#7865 (comment)

Author: Octelly

mkdocs.yml

@@ -19,11 +19,11 @@ markdown_extensions:
   - admonition
   - pymdownx.details
   - pymdownx.superfences
-  - pymdownx.emoji:
-      emoji_index: !!python/name:materialx.emoji.twemoji
-      emoji_generator: !!python/name:materialx.emoji.to_svg
   - toc:
       permalink: true
+  # - pymdownx.emoji:
+  #     emoji_index: !!python/name:materialx.emoji.twemoji
+  #     emoji_generator: !!python/name:materialx.emoji.to_svg
 plugins:
   - git-revision-date
   - search