add comment for clarity

Author: atravitz

showcase/openfe_showcase.ipynb

@@ -111,6 +111,8 @@
    "source": [
     "# NBVAL_SKIP\n",
     "# Only run this cell if on google colab\n",
+    "# Colab will say the runtime crashed, but this is expected with `install_from_url`, and you should continue running the next cell\n",
+    "\n",
     "import os\n",
     "if \"COLAB_RELEASE_TAG\" in os.environ:\n",
     "    import condacolab\n",