message: Minor error message fix.
diff: @@ -781,8 +781,9 @@ def _write_object_proto(obj, proto, asset_file_def_index, function_name_map):
  elif resource_variable_ops.is_resource_variable(obj):
  proto.variable.SetInParent()
  if not obj.name.endswith(":0"):
  - raise ValueError("Cowardly refusing to save variable %s because of"
  - " unexpected suffix which won't be restored.")
  + raise ValueError("Cowardly refusing to save variable {} because of"
  + " unexpected suffix which won't be restored.".format(
  + obj.name))
  proto.variable.name = meta_graph._op_name(obj.name) # pylint: disable=protected-access
  proto.variable.trainable = obj.trainable
  proto.variable.dtype = obj.dtype.as_datatype_enum
  