fix introduction photos

Author: tomkralidis

workshop/jupyter/content/notebooks/01-introduction.ipynb

@@ -36,7 +36,8 @@
     "        <td><a href=\"https://github/tomkralidis\"><img width=\"150\" src=\"https://avatars.githubusercontent.com/u/910430?v=4\"/></a></td>\n",
     "        <td><a href=\"https://github/justb4\"><img width=\"150\" src=\"https://avatars.githubusercontent.com/u/582630?v=4\"/></a></td>\n",
     "        <td><a href=\"https://twitter.com/luis_m_de_sousa\"><img width=\"150\" src=\"https://avatars.githubusercontent.com/u/1137878?v=4\"/></a></td>\n",
-    "        <td><a href=\"https://twitter.com/krishnaglodha\"><img width=\"150\" src=\"https://avatars.githubusercontent.com/u/47075664?v=4\"/></a></td>     <td><a href=\"https://twitter.com/pvangenuchten\"><img width=\"150\" src=\"https://avatars.githubusercontent.com/u/299829?v=4\"/></a></td>\n",
+    "       <td><a href=\"https://twitter.com/pvangenuchten\"><img width=\"150\" src=\"https://avatars.githubusercontent.com/u/299829?v=4\"/></a></td>\n",
+    "       <td><a href=\"https://twitter.com/krishnaglodha\"><img width=\"150\" src=\"https://avatars.githubusercontent.com/u/47075664?v=4\"/></a></td>\n",
     "    </tr>\n",
     "    <tr>\n",
     "        <td>Tom Kralidis</td>\n",