Update python/ipywidgets/ipywidgets/widgets/widget.py

Co-authored-by: Jason Grout <[email protected]>

Author: maartenbreddels

python/ipywidgets/ipywidgets/widgets/widget.py

@@ -312,7 +312,7 @@ def _active_widgets():
 
     @_staticproperty
     def _widget_types():
-        warnings.warn("Widget._widget_types is deprecated, use ipywidgets.widgets.widget.register", DeprecationWarning)
+        warnings.warn("Widget._widget_types is deprecated, use ipywidgets.widgets.widget.registry", DeprecationWarning)
         return registry
 
     @_staticproperty