typo fix

Author: oena

tutorials/cmapPy_pandasGEXpress_tutorial.ipynb

@@ -11,7 +11,7 @@
     "\n",
     "Author: Oana Enache\n",
     "\n",
-    "Last updated April 26th, 2017\n",
+    "Last updated December 5th, 2017\n",
     "\n",
     "For questions and issue reports, please file an issue at github.com/cmap/cmapPy. \n",
     "\n",
@@ -230,7 +230,7 @@
     "\n",
     "Analogously, you might be interested in only parsing in a specific row space; for example, you might be interested at only only examining patterns in expression of [landmark genes](https://clue.io/connectopedia/what_are_landmark_genes). The metadata column identifying landmark membership is `pr_is_lm` (for more details on other metadata header meanings, please see the [GEO User Guide](https://docs.google.com/document/d/1q2gciWRhVCAAnlvF2iRLuJ7whrGP6QjpsCMq1yWz7dU/edit#heading=h.l6bq0r1aih50)). \n",
     "\n",
-    "So, we would parse in the gene annotations and obtain a list of only the row identifiers corresponding to landmark genes. **Note that for Entrez ids (as below), you need to specify that the data type annotations are strings (dtype=str argument below); otherwise, the parser currently behaves as if you're subsetting by index** "
+    "So, we would parse in the gene annotations and obtain a list of only the row identifiers corresponding to landmark genes. **Note that for Entrez ids (as below), you need to specify that the data type annotations are strings (dtype=str argument below); otherwise, the parser currently behaves as if you're subsetting by index.** "
    ]
   },
   {