message: Update the comment in the metadata schema file
diff: @@ -81,7 +81,8 @@ enum AssociatedFileType : byte {
  // Files such as readme.txt.
  DESCRIPTIONS = 1,
  - // Contains labels that annotate certain axis of the tensor. For example,
  + // Contains a list of labels (characters separated by "\n" or in lines) that
  + // annotate certain axis of the tensor. For example,
  // the label file in image classification. Those labels annotate the
  // the output tensor, such that each value in the output tensor is the
  // probability of that corresponding category specified by the label.
  @@ -95,7 +96,8 @@ enum AssociatedFileType : byte {
  // specified locale.
  TENSOR_AXIS_LABELS = 2,
  - // Contains labels that tensor values correspond to. For example, in
  + // Contains a list of labels (characters separated by "\n" or in lines) that
  + // tensor values correspond to. For example, in
  // the object detection model, one of the output tensors is the detected
  // classes. And each value in the tensor refers to the index of label in the
  // category label file.
  