Update py/server/deephaven/table_listener.py

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

py/server/deephaven/table_listener.py

@@ -429,8 +429,7 @@ def table_update(self) -> Optional[TableUpdate]:
 
 
 class MergedListener(ABC):
-    """A MergedListener has a collection of ListenerRecorder. Each one must complete before the merged listener
-    executes only once for the current update graph cycle. """
+    """An abstract multi-table listener class that should be subclassed by any user multi-table listener class."""
 
     @abstractmethod
     def on_update(self, updates: Dict[Table, TableUpdate]) -> None: