[Docs] Reduce time spent generating API docs (#34255)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/config/model.py

@@ -1557,6 +1557,7 @@ class ModelConfig:
 
     @property
     def attn_type(self) -> AttnTypeStr:
+        """Determine the attention type based on model configuration."""
         if self.pooler_config is not None:
             seq_pooling_type = self._model_info.default_seq_pooling_type
             if seq_pooling_type == "CLS":