[3.13] gh-54874: Expand unicodedata module documentation (GH-138301) (#138345)

[3.13] gh-54874: Expand unicodedata module documentation (GH-138301) (#138345)

* gh-54874: Expand unicodedata module documentation (GH-138301)

Closes GH-54874
(cherry picked from commit 0d383f86eec97b343457ee1ce1d274f6b3d9ce6c)

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Alexander Belopolsky <abalkin@users.noreply.github.com>
* Changes links to UCD 15.0.0

---------

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Alexander Belopolsky <abalkin@users.noreply.github.com>