Apply suggestions from code review

Co-authored-by: Lisa <lisaleemcb@gmail.com>

Author: rcap107

doc/modules/default_wrangling/apply_to_cols.rst

@@ -26,7 +26,7 @@ option in all cases. In scikit-learn pipelines, the column selection operation c
 be done with the :class:`~sklearn.compose.ColumnTransformer`.
 
 Skrub provides the |ApplyToCols| transformer and the
-:ref:`selectors<user_guide_selectors>` to achieve the same results with larger
+:ref:`selectors<user_guide_selectors>` to achieve the same results with a larger
 degree of control over which columns are being transformed.
 |ApplyToCols| maps a transformer to columns in a dataframe, so that all
 columns that satisfy a certain condition are transformed, while the others are