Fix typos in docs and docstrings (GH-13745)

diff --git a/Lib/turtledemo/paint.py b/Lib/turtledemo/paint.py
index dde1691..fc6852a 100755
--- a/Lib/turtledemo/paint.py
+++ b/Lib/turtledemo/paint.py
@@ -7,7 +7,7 @@
 
 - left mouse button moves turtle
 - middle mouse button changes color
-- right mouse button toogles betweem pen up
+- right mouse button toggles between pen up
 (no line drawn when the turtle moves) and
 pen down (line is drawn). If pen up follows
 at least two pen-down moves, the polygon that