fix notebook

Author: Matt Sokoloff

examples/model_assisted_labeling/tiled_imagery_mal.ipynb

@@ -387,7 +387,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.2"
+   "version": "3.8.8"
   }
  },
  "nbformat": 4,