Fix ETL User Guide link.

tutorials/00. Quickstart for Deeplearning4j.zepp.ipynb

@@ -85,7 +85,7 @@
     "\n",
     "Note that we create two different iterators below, one for training data and the other for for evaluating the accuracy of our model after training. The last `boolean` parameter in the constructor indicates whether we are instantiating test/train.\n",
     "\n",
-    "You won't need it for this tutorial, you can learn more about loading data for neural networks in this [ETL user guide](https://deeplearning4j.org/etl-userguide). DL4J comes with many record readers that can load and convert data into ND-Arrays from CSVs, images, videos, audio, and sequences."
+    "You won't need it for this tutorial, you can learn more about loading data for neural networks in this [ETL user guide](https://deeplearning4j.org/docs/latest/datavec-overview). DL4J comes with many record readers that can load and convert data into ND-Arrays from CSVs, images, videos, audio, and sequences."
    ]
   },
   {
@@ -257,4 +257,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}