[MRG] Update gridsearch example for multimetric scoring.
@@ -1101,6 +1101,10 @@ class GridSearchCV(BaseSearchCV):
See ``scoring`` parameter to know more about multiple metric
evaluation.
+ See :ref:`sphx_glr_auto_examples_model_selection_plot_grid_search_digits.py`
+ to see how to design a custom selection strategy using a callable
+ via `refit`.
+
.. versionchanged:: 0.20
Support for callable added.
