DOC Fix minor typo in doc/tutorial/basic/tutorial.rst
@@ -93,7 +93,7 @@ interpreter prompt::
A dataset is a dictionary-like object that holds all the data and some
metadata about the data. This data is stored in the ``.data`` member,
which is a ``n_samples, n_features`` array. In the case of supervised
-problem, one or more response variables are stored in the ``.target`` member. More
+problems, one or more response variables are stored in the ``.target`` member. More
details on the different datasets can be found in the :ref:`dedicated
section <datasets>`.
