Update 03.auto-train-models.ipynb

fixing image

Author: sdgilley

tutorials/03.auto-train-models.ipynb

@@ -17,7 +17,7 @@
  "\n",
  "In this tutorial, you'll learn how to automatically generate a machine learning model. This model can then be deployed following the workflow in the [Deploy a model](tutorial-deploy-models-with-aml.md) tutorial.\n",
  "\n",
- "[flow diagram](./imgs/nn.png)\n",
+ "[flow diagram](imgs/nn.png)\n",
  "\n",
  "Similar to the [train models tutorial](tutorial-train-models-with-aml.md), this tutorial classifies handwritten images of digits (0-9) from the [MNIST](http://yann.lecun.com/exdb/mnist/) dataset.\n",
  "\n",