Update config.json

config.json

@@ -40,6 +40,8 @@
          ],
          "model_checksums": {
              "base": "placeholder_checksum_base",
-             "small": "placeholder_checksum_small"
+             "small": "placeholder_checksum_small",
+             "medium": "placeholder_checksum_medium",
+             "large": "placeholder_checksum_large"
          }
      }