Correcting metadata

ImageColorizerColabStable.ipynb

@@ -270,7 +270,7 @@
   "accelerator": "GPU",
   "colab": {
    "collapsed_sections": [],
-   "name": "ImageColorizerColab.ipynb",
+   "name": "ImageColorizerColabStable.ipynb",
    "provenance": [],
    "toc_visible": true,
    "version": "0.3.2"