Update py/server/deephaven/table_listener.py

Co-authored-by: Chip Kent <[email protected]>

py/server/deephaven/table_listener.py

@@ -448,7 +448,7 @@ def __init__(self, tables: Sequence[Table], listener: Union[Callable[[Dict[Table
 
         Table change events are processed by 'listener', which can be either
         (1) a callable (e.g. function) or
-        (2) an instance of MergedTableListener type which provides an "on_update" method.
+        (2) an instance of MergedListener type which provides an "on_update" method.
         The callable or the on_update method must take 1 parameter of type Dict[Table, TableUpdate].
 
         Note: Don't do table operations in the listener. Do them beforehand, and add the results as dependencies.