Add quote to notebook to allow it to load

docs/examples/notebooks/00_notebook_tour.ipynb

@@ -516,7 +516,7 b''
      "cell_type": "markdown",
      "source": [
       "Today's Google doodle, (at the time I created this notebook). This should also work in the Qtconsole.",
-      "Drawback is that the saved notebook will be larger, but the image will still be present offline. 
+      "Drawback is that the saved notebook will be larger, but the image will still be present offline."
      ]
     },
     {