[MRG] DOC Fix minor typo in BisectingKMeans docstring
@@ -183,7 +183,7 @@ class BisectingKMeans(_BaseKMeans):
Notes
-----
- It might be inefficient when n_cluster is less than 3, due to unnecassary
+ It might be inefficient when n_cluster is less than 3, due to unnecessary
calculations for that case.
Examples
