fix doc error

Author: cem-anyscale

python/ray/data/preprocessor.py

@@ -676,7 +676,7 @@ def deserialize(serialized: Union[str, bytes]) -> "Preprocessor":
 
         Raises:
             ValueError: If the serialized data is corrupted or format is unrecognized
-            UnknownPreprocessorError: If the preprocessor type is not registered
+            ray.data.preprocessors.version_support.UnknownPreprocessorError: If the preprocessor type is not registered
         """
         from ray.data.preprocessors.serialization_handlers import (
             PickleSerializationHandler,

python/ray/data/preprocessors/version_support.py

@@ -79,7 +79,7 @@ def _lookup_class(serialization_id: str):
         The registered preprocessor class
 
     Raises:
-        UnknownPreprocessorError: If the serialization ID is not registered
+        ray.data.preprocessors.version_support.UnknownPreprocessorError: If the serialization ID is not registered
     """
     if serialization_id not in _PREPROCESSOR_REGISTRY:
         raise UnknownPreprocessorError(serialization_id)