[3.13] Docs: Update and proofread `library/venv.rst` (GH-124121) (#124644)

Docs: Update and proofread `library/venv.rst` (GH-124121)
(cherry picked from commit 23e812b84ae688a56a1011ed69a0d178c70e35ea)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>