Fix typo in turtledemo.two_canvases. (GH-25194)

terryjreedy · web-flow · commit 4e2ef7084185 · 2021-04-05T13:19:13.000-04:00
diff --git a/Lib/turtledemo/two_canvases.py b/Lib/turtledemo/two_canvases.py
@@ -1,7 +1,7 @@
 """turtledemo.two_canvases
 
 Use TurtleScreen and RawTurtle to draw on two
-distinct canvases in a separate windows. The
+distinct canvases in a separate window. The
 new window must be separately closed in
 addition to pressing the STOP button.
 """
