DOC: DBSCAN: there's no calculate_distance function

Author: larsmans

sklearn/cluster/dbscan_.py

@@ -37,7 +37,7 @@ def dbscan(X, eps=0.5, min_samples=5, metric='minkowski',
     metric: string, or callable
         The metric to use when calculating distance between instances in a
         feature array. If metric is a string or callable, it must be one of
-        the options allowed by metrics.pairwise.calculate_distance for its
+        the options allowed by metrics.pairwise.pairwise_distances for its
         metric parameter.
         If metric is "precomputed", X is assumed to be a distance matrix and
         must be square.