[3.11] gh-48241: Clarify URL needs to be encoded when provided to urlopen and Request (GH-103855) (#103891)

(cherry picked from commit 44010d0f1203134cd8f885ca574caaef373e80f6)

Co-authored-by: Michael Blahay <mblahay@users.noreply.github.com>
Co-authored-by: Ɓukasz Langa <lukasz@langa.pl>
2 files changed