Fix TFGAN tutorial JSON mistakes.

research/gan/tutorial.ipynb

@@ -29,7 +29,7 @@
     "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#unconditional_input'>Input pipeline</a><br>\n",
     "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#unconditional_model'>Model</a><br>\n",
     "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#unconditional_loss'>Loss</a><br>\n",
-    "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb sp;<a href='#unconditional_train'>Train and evaluation</a><br>\n",
+    "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#unconditional_train'>Train and evaluation</a><br>\n",
     "<a href='#ganestimator_example'>GANEstimator example</a><br>\n",
     "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#ganestimator_input'>Input pipeline</a><br>\n",
     "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#ganestimator_train'>Train</a><br>\n",
@@ -42,7 +42,7 @@
     "<a href='#infogan_example'>InfoGAN example</a><br>\n",
     "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#infogan_input'>Input pipeline</a><br>\n",
     "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#infogan_model'>Model</a><br>\n",
-    "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#infogan_loss'>Loss</a><br>\n",,
+    "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#infogan_loss'>Loss</a><br>\n",
     "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='#infogan_train'>Train and evaluation</a><br>"
    ]
   },