Typo

docs/index.rst

@@ -375,7 +375,7 @@ The find out how many records are left after the filter, we can use Python's bui
 
 With that we're ready to move on to a related, similar task: Importing all of the individual contributions reported to last year's 17 ballot measures and filtering them down to just those supporting and opposing Proposition 64.
 
-We're start by downloading `this second CSV file <http://first-python-notebook.readthedocs.io/en/latest/_static/contributions.csv>`_ and saving it to the same directory as this notebook with the name ``contributions.csv``. We'll then open it with ``read_csv`` and save it as a new variable just as we did above.
+We'll start by downloading `this second CSV file <http://first-python-notebook.readthedocs.io/en/latest/_static/contributions.csv>`_ and saving it to the same directory as this notebook with the name ``contributions.csv``. We'll then open it with ``read_csv`` and save it as a new variable just as we did above.
 
 .. warning::