Revert the modifications of outputs in "fix bundle metadata errors (#734)" (#735)

* Revert "fix bundle metadata errors (#734)"

This reverts commit 2e876cb.

* revert the format of putputs

Signed-off-by: Yiheng Wang <[email protected]>

* fix typo

Signed-off-by: Yiheng Wang <[email protected]>

Author: yiheng-wang-nv

modules/bundle/spleen_segmentation/configs/metadata.json

@@ -54,8 +54,7 @@
         "outputs": {
             "pred": {
                 "type": "image",
-                "format": "hounsfield",
-                "modality": "CT",
+                "format": "segmentation",
                 "num_channels": 2,
                 "spatial_shape": [
                     96,