Fixed variable name typo for deeplab_demo Tutorial

Minor variable name fix

research/deeplab/deeplab_demo.ipynb

@@ -294,13 +294,13 @@
         "  try:\n",
         "    f = urllib.request.urlopen(url)\n",
         "    jpeg_str = f.read()\n",
-        "    orignal_im = Image.open(BytesIO(jpeg_str))\n",
+        "    original_im = Image.open(BytesIO(jpeg_str))\n",
         "  except IOError:\n",
         "    print('Cannot retrieve image. Please check url: ' + url)\n",
         "    return\n",
         "\n",
         "  print('running deeplab on image %s...' % url)\n",
-        "  resized_im, seg_map = MODEL.run(orignal_im)\n",
+        "  resized_im, seg_map = MODEL.run(original_im)\n",
         "\n",
         "  vis_segmentation(resized_im, seg_map)\n",
         "\n",