DOC fix a missing final fullstop in docstring
@@ -2877,7 +2877,7 @@ def quantile_transform(
copy : bool, default=True
Set to False to perform inplace transformation and avoid a copy (if the
input is already a numpy array). If True, a copy of `X` is transformed,
- leaving the original `X` unchanged
+ leaving the original `X` unchanged.
.. versionchanged:: 0.23
The default value of `copy` changed from False to True in 0.23.
