small fix

Author: ngxson

convert_hf_to_gguf.py

@@ -442,7 +442,7 @@ def print_registered_models(cls):
                 logger.error(f"  - {name}")
 
     @classmethod
-    def from_model_architecture(cls, arch: str, model_type = ModelType.TEXT) -> type[Model]:
+    def from_model_architecture(cls, arch: str, model_type = ModelType.TEXT) -> type[ModelBase]:
         try:
             return cls._model_classes[model_type][arch]
         except KeyError: