bpo-37149: Change Shipman tkinter link from archive.org to TkDocs (GH-22188)


The new link responds much faster and begins with a short explanation of the status of the doc.
(cherry picked from commit 06d0b8b67e8aebd8fe4c34e97d6915c11f4afa30)

Co-authored-by: Mark Roseman <mark@markroseman.com>
2 files changed