Fix git hub rendering of CNTK 204 notebook

Tutorials/CNTK_204_Sequence_To_Sequence.ipynb

@@ -40,9 +40,11 @@
     "\n",
     "### Example\n",
     "\n",
-    "| Letters  | T | A | N | G | E | R |\n",
-    "| --- | --- |\n",
-    "| Phonemes | ~T | ~AE | ~NG | ~ER | null | null |\n",
+    "The graphemes or the letters are translated into corresponding phonemes: \n",
+    "\n",
+    "> **Grapheme** : **|** T **|** A **|** N **|** G **|** E **|** R **|**  \n",
+    "**Phonemes** : **|** ~T **|** ~AE **|** ~NG **|** ~ER **|** null **|** null **|** \n",
+    "\n",
     "\n"
    ]
   },