DOC fix rst syntax error for reference in _classes.py
@@ -525,7 +525,7 @@ class BaseDecisionTree(MultiOutputMixin, BaseEstimator, metaclass=ABCMeta):
def cost_complexity_pruning_path(self, X, y, sample_weight=None):
"""Compute the pruning path during Minimal Cost-Complexity Pruning.
- See `ref`:minimal_cost_complexity_pruning` for details on the pruning
+ See :ref:`minimal_cost_complexity_pruning` for details on the pruning
process.
Parameters
