Fix terminology for selecting a video.

Selecting a video currently shows 'Videos title' along the top of the picker.

I believe 'Videos' would be more appropriate. 

The reason it was changed was for localization, which unless I am mistaken has been removed.

(Old commit showing it was previously 'Videos' until localization was added. Probably completely irrelevant)
https://github.com/coryjthompson/cordova-ios/commit/8b0f11fd60bf6966bd40d296cd80b96e2cef6806

Thanks.