Fix deprecation warning in docs

Author: facelessuser

mkdocs.yml

@@ -85,8 +85,8 @@ markdown_extensions:
   - pymdownx.caret:
   - pymdownx.smartsymbols:
   - pymdownx.emoji:
-      emoji_index: !!python/name:materialx.emoji.twemoji
-      emoji_generator: !!python/name:materialx.emoji.to_svg
+      emoji_index: !!python/name:material.extensions.emoji.twemoji
+      emoji_generator: !!python/name:material.extensions.emoji.to_svg
   - pymdownx.escapeall:
       hardbreak: True
       nbsp: True