LogisticregressionCV docs(#8424): documented C_ shape
@@ -1536,6 +1536,7 @@ class LogisticRegressionCV(LogisticRegression, BaseEstimator,
Array of C that maps to the best scores across every class. If refit is
set to False, then for each class, the best C is the average of the
C's that correspond to the best scores for each fold.
+ `C_` is of shape(n_classes,) when the problem is binary.
n_iter_ : array, shape (n_classes, n_folds, n_cs) or (1, n_folds, n_cs)
Actual number of iterations for all classes, folds and Cs.
