Update hog.ipynb

I am changing the mutichannel property of hog with channel_axis which is used in current version

Author: rir7890

machine-learning/hog-feature-extraction/hog.ipynb

@@ -69,7 +69,7 @@
    "source": [
     "#creating hog features\n",
     "fd, hog_image = hog(resized_img, orientations=9, pixels_per_cell=(8, 8),\n",
-    "                \tcells_per_block=(2, 2), visualize=True, multichannel=True)\n",
+    "                \tcells_per_block=(2, 2), visualize=True, channel_axis=2)\n",
     "print(fd.shape)\n",
     "plt.axis(\"off\")\n",
     "plt.imshow(hog_image, cmap=\"gray\")"
@@ -94,4 +94,4 @@
    "source": []
   }
  ]
-}
+}