[3.6] Fix typos in multiple `.rst` files (GH-1668) (#1702)

(cherry picked from commit 3378b2062c7fbb77a9b5e6d315d6b94160fac69a)
diff --git a/Doc/library/turtle.rst b/Doc/library/turtle.rst
index 1986972..31761be 100644
--- a/Doc/library/turtle.rst
+++ b/Doc/library/turtle.rst
@@ -1797,7 +1797,7 @@
    :param prompt: string
 
    Pop up a dialog window for input of a string. Parameter title is
-   the title of the dialog window, propmt is a text mostly describing
+   the title of the dialog window, prompt is a text mostly describing
    what information to input.
    Return the string input. If the dialog is canceled, return ``None``. ::