Fix formatting issue in Orderable Cards notebook

ipynb/Orderable Cards.ipynb

@@ -29,7 +29,7 @@
     "|*N*|Concrete Hands|Abstract Hands|\n",
     "|--|---|---|\n",
     "|6|20,358,520|4,096|\n",
-    "13|635,013,559,600|67,108,864|\n",
+    "|13|635,013,559,600|67,108,864|\n",
     "|*N*|(52 choose *N*) | *N*<sup>4</sup>|\n",
     "\n",
     "That's a big improvement! Now let's start designing a program to solve the problem:\n",