Add lang hyphen, if not exists for HTML tags

Arch Linux Firefox doesn't set lang="ja" as Japanese

Аўтар
Pacharapol Withayasakpunt (Pol)
Daily installs
0
Total installs
2
Рэйтынг
0 0 0
Версія
0.1.4
Створаны
18.04.2022
Абноўлены
03.05.2022
Памер
1.4 КБ
Ліцэнзія
MIT
Applies to
All sites

Firefox on Arch Linux doesn't detect lang attribute without hyphens

This bug should probably eventually be fixed, but I made this for the time being.