fix minor typo

Author: amueller

07-working-with-text-data.ipynb

@@ -1092,9 +1092,9 @@
     "from sklearn.decomposition import LatentDirichletAllocation\n",
     "lda = LatentDirichletAllocation(n_topics=10, learning_method=\"batch\",\n",
     "                                max_iter=25, random_state=0)\n",
-    "# be build the model and transform the data in one step\n",
-    "# computing transform takes some time,\n",
-    "# and we can save time by doing both at once.\n",
+    "# We build the model and transform the data in one step\n",
+    "# Computing transform takes some time,\n",
+    "# and we can save time by doing both at once\n",
     "document_topics = lda.fit_transform(X)"
    ]
   },