bpo-14117: Make minor tweaks to turtledemo (GH-8002)


The 'wikipedia' example is now 'rosette', describing what it draws.
The 'penrose' print output is reduced.  The 'tree' '1024'
output is eliminated.
(cherry picked from commit 891a1f86d415779cf67ca23e626a868e586feb05)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
4 files changed