Changes:
- Remove Uffizzi badge in fr_FR, already removed in English version
- Add missing language links in zh_Hans and ko_kr language switchers
- Fix FAQ link casing (docs/FAQ to docs/faq) in all three files
- Update copyright year from 2020-2025 to 2020-2026 in all three files
Scope: README translations only - no code changes
Signed-off-by: Criszel Gipala <gipalacriszel512@gmail.com>