[docs] [issue43935] Fix typo in Turtle.back docstring

Change by Tarjei Bærland : ---------- assignee: docs@python components: Documentation nosy: docs@python, tarjeiba priority: normal severity: normal status: open title: Fix typo in Turtle.back docstring versions: Python 3.10 _______________________________________ Python tracker https://bugs.python.org/issue43935 _______________________________________