Merge pull request aws#90 from awslabs/arpin_ntm_supervised_tweak

Fixed: supervised typo in markdown

Author: djarpin

introduction_to_amazon_algorithms/ntm_synthetic/ntm_synthetic.ipynb

@@ -484,7 +484,7 @@
     "\n",
     "***\n",
     "\n",
-    "This notebook was a basic introduction to the NTM .  It was applied on a synthetic dataset merely to show how the algorithm functions and represents data.  Obvious extensions would be to train the algorithm utilizing real data.  We skipped the important step of qualitatively evaluating the outputs of NTM.  Because it is a supervised model, we want our topics to make sense.  There is a great deal of subjectivity involved in this, and whether or not NTM is more suitable than another topic modeling algorithm like Amazon SageMaker LDA will depend on your use case."
+    "This notebook was a basic introduction to the NTM .  It was applied on a synthetic dataset merely to show how the algorithm functions and represents data.  Obvious extensions would be to train the algorithm utilizing real data.  We skipped the important step of qualitatively evaluating the outputs of NTM.  Because it is an unsupervised model, we want our topics to make sense.  There is a great deal of subjectivity involved in this, and whether or not NTM is more suitable than another topic modeling algorithm like Amazon SageMaker LDA will depend on your use case."
    ]
   }
  ],