Merge pull request #550 from microsoft/fix250

fix #250

lessons/3-NeuralNetworks/03-Perceptron/Perceptron.ipynb

@@ -624,7 +624,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": null,
    "metadata": {
     "slideshow": {
      "slide_type": "slide"
@@ -633,7 +633,7 @@
    "outputs": [],
    "source": [
     "# If you are not running this notebook from a cloned repository, you may need to grab the binary dataset file first\n",
-    "# !wget https://github.com/microsoft/AI-For-Beginners/blob/main/data/mnist.pkl.gz?raw=true\n",
+    "# !wget https://github.com/microsoft/AI-For-Beginners/raw/main/data/mnist.pkl.gz?raw=true\n",
     "# In this case correct the link to the dataset below as well.\n",
     "\n",
     "with gzip.open('../../data/mnist.pkl.gz', 'rb') as mnist_pickle:\n",
@@ -1077,4 +1077,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}