Update preprocessor_config.json

preprocessor_config.json

@@ -18,6 +18,7 @@
   "resample": 2,
   "rescale_factor": 0.00392156862745098,
   "size": {
-    "longest_edge": 800
+    "longest_edge": 1000,
+    "shortest_edge": 800
   }
 }