Update preprocessor_config.json

preprocessor_config.json

@@ -7,7 +7,10 @@
   "resample": 3,
   "rescale_factor": 0.00392156862745098,
   "size": {
+    "shortest_edge": 224
+  },
+  "crop_size": {
     "height": 224,
     "width": 224
   }
-}
+}