Update index.html
Update index.html

avoid unhandled exception with undefined navigator properties, in order to still return a default language
Jhovany200/Dism-Multi-language,Chuyu-Team/Dism-Multi-language,Chuyu-Team/Dism-Multi-language,Chuyu-Team/Dism-Multi-language,Jhovany200/Dism-Multi-language,Jhovany200/Dism-Multi-language,Jhovany200/Dism-Multi-language,Chuyu-Team/Dism-Multi-language,Chuyu-Team/Dism-Multi-language,Jhovany200/Dism-Multi-language