Update docker-compose.yml to clarify development volume purpose; refine mkdocs.yml for consistent emoji handling

docker-compose.yml

@@ -4,6 +4,7 @@ services:
     ports:
       - "5000:5000"
     volumes:
+      # Development volumes for hot reloading
       - ./musicround:/app/musicround
       - ./templates:/app/templates
       - ./static:/app/static

mkdocs.yml

@@ -25,8 +25,7 @@ plugins:
   - mkdocstrings:
       handlers:
         python:
-          selection:
-            docstring_style: google
+          docstring_style: google
 
 markdown_extensions:
   - admonition
@@ -35,8 +34,8 @@ markdown_extensions:
   - pymdownx.tabbed
   - pymdownx.details
   - 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
   - toc:
       permalink: true