fix typo

src/pymmcore_widgets/_stack_viewer/_stack_viewer.py

@@ -64,7 +64,7 @@ def setMode(self, mode: ChannelMode) -> None:
 
 
 class StackViewer(QWidget):
-    """A viewer for AND arrays."""
+    """A viewer for ND arrays."""
 
     def __init__(
         self,