[Cooker] 9.2 "MEDIAS" -> MEDIA

[Alvin Austin]

Hello,

Just a minor QA correction before 9.2 gets released.

There are many instances of  "medias" in the locales and in the title 
"Software Medias Manager". There is no such word.

"Media" is already a plural and should be used instead.

Keep up the great work!

Alvin