text: Title: Docs: SerializationPluginProtocol example is cut off
  Body: ### Summary
  
  It seems the source has changed (https://docs.advanced-alchemy.litestar.dev/latest/reference/extensions/litestar/plugins/serialization.html#advanced_alchemy.extensions.litestar.plugins.serialization.SQLAlchemySerializationPlugin.supports_type) and the example is missing quite a bit:
  
  <img width="915" alt="image" src="https://github.com/user-attachments/assets/af00a0fe-8c2a-45ed-ba80-1a5b6799ed40">