DOC: Add missing '@' in HoverTool.formatters example
@@ -1067,7 +1067,7 @@ class HoverTool(Inspection):
.. code-block:: python
- tool.formatters = dict(date="datetime")
+ tool.formatters = {"@date": "datetime"}
will cause format specifications for the "date" column to be interpreted
according to the "datetime" formatting scheme. The following schemes are
