Fix typos in docs/source/notebooks/lda-advi-aevb.ipynb (#3252)

Author: dongkwan-kim

docs/source/notebooks/lda-advi-aevb.ipynb

@@ -77,7 +77,7 @@
     }
    ],
    "source": [
-    "# The number of words in the vocaburary\n",
+    "# The number of words in the vocabulary\n",
     "n_words = 1000\n",
     "\n",
     "print(\"Loading dataset...\")\n",
@@ -247,7 +247,7 @@
     "                      total_size=n_samples_tr)\n",
     "    beta = Dirichlet('beta', a=pm.floatX((1.0 / n_topics) * np.ones((n_topics, n_words))), \n",
     "                     shape=(n_topics, n_words), transform=t_stick_breaking(1e-9))\n",
-    "    # Note, that we devined likelihood with scaling, se here we need no additional `total_size` kwarg\n",
+    "    # Note, that we defined likelihood with scaling, so here we need no additional `total_size` kwarg\n",
     "    doc = pm.DensityDist('doc', logp_lda_doc(beta, theta), observed=doc_t)"
    ]
   },