Fixed database typo and removed unnecessary class identifier.

venv/Lib/site-packages/skimage/transform/histogram_matching.py

@@ -0,0 +1,25 @@
+from warnings import warn
+
+from ..exposure import match_histograms as mh
+
+def match_histograms(image, reference, multichannel=False):
+    warn('DEPRECATED: skimage.transform.match_histograms has been moved to '
+         'skimage.exposure.match_histograms. It will be removed from '
+         'skimage.transform in version 0.18.', stacklevel=2)
+    return mh(image, reference, multichannel=False)
+
+
+if mh.__doc__ is not None:
+    match_histograms.__doc__ = mh.__doc__ + """
+    Warns
+    -----
+    Deprecated:
+        .. versionadded:: 0.16
+
+        This function is deprecated and will be removed in scikit-image 0.18.
+        Please use ``match_histograms`` from ``exposure`` module instead.
+
+    See also
+    --------
+    skimage.exposure.match_histograms
+    """