Fix image paths for the penguin species and the network images

PiperOrigin-RevId: 427860090

Author: tensorflower-gardener

site/en/tutorials/customization/custom_training_walkthrough.ipynb

@@ -102,7 +102,8 @@
         "\n",
         "<table>\n",
         "  <tr><td>\n",
-        "    ![\"Illustration of Chinstrap, Gentoo, and Adélie penguins\"](images/penguins_ds_species.png)\n",
+        "    <img src=\"https://www.tensorflow.org/tutorials/customization/images/penguins_ds_species.png\" alt=\"Illustration of Chinstrap, Gentoo, and Adélie penguins\"\n",
+        "     class=\"no-filter\">\n",
         "  </td></tr>\n",
         "  <tr><td align=\"center\">\n",
         "    <b>Figure 1.</b> <a href=\"https://en.wikipedia.org/wiki/Chinstrap_penguin\">Chinstratp</a>, <a href=\"https://en.wikipedia.org/wiki/Gentoo_penguin\">Gentoo</a>, and <a href=\"https://en.wikipedia.org/wiki/Ad%C3%A9lie_penguin\">Adélie</a> penguins (Artwork by @allison_horst, CC BY-SA 2.0).<br/>&nbsp;\n",
@@ -364,7 +365,8 @@
         "\n",
         "<table>\n",
         "  <tr><td>\n",
-        "    ![\"A diagram of the network architecture: Inputs, 2 hidden layers, and outputs\"](images/full_network_penguin.png)\n",
+        "    <img src=\"https://wwtensorflow.org/tutorials/customization/images/full_network_penguin.png\" alt=\"A diagram of the network architecture: Inputs, 2 hidden layers, and outputs\"\n",
+        "     class=\"no-filter\">\n",
         "  </td></tr>\n",
         "  <tr><td align=\"center\">\n",
         "    <b>Figure 2.</b> A neural network with features, hidden layers, and predictions.<br/>&nbsp;\n",