bpo-31873: Update unicode.rst - 'unicode' capitalization (GH-4125)


Update 'unicode' capitalization. 'Unicode' is a proper noun, and as such should be capitalized.
Changed multiple instances.
(cherry picked from commit 85225b6a58a516c50c055d5114668ed2fcdcda8c)

Co-authored-by: toonarmycaptain <toonarmycaptain@hotmail.com>
1 file changed