gh-153550: Remove out-of-date page-number citations from tkinter docs

[su-213]

Remove references to specific page numbers in Ousterhout's book
("page 160", "page 183", "page 201") from the tkinter documentation,
as they refer to a single print edition and are not useful online.

Partially addresses #153550

• Issue: Modernize the older prose sections of the tkinter documentation #153550

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #33557615 | 📁 Comparing 8693c36 against main (ed71655)

  🔍 Preview build  

1 file changed

± library/tkinter.html

[serhiy-storchaka]

Thanks, @su-213. This issue was opened by the person already working on it, so it's worth checking (a comment on the issue) whether the author is on it before sending a PR, especially on a freshly-opened one.

In this case #153647 has already removed these page-number citations, pointing each spot to the relevant Tk man page, so this is superseded on main. The Modules/_zstd/_zstdmodule.c change here is also unrelated to gh-153550 — please send it as its own PR if you'd like to pursue it.

Closing as superseded. Thanks again!