lib/android: Added import and fixed typo

Signed-off-by: Frédéric Vachon <fredvac@gmail.com>
Merge: lib/android: Typo fix for shared_preferences module

Fixed typo and added import to shared_preferences_api11 module

Signed-off-by: Frédéric Vachon <fredvac@gmail.com>

Pull-Request: #580
Reviewed-by: Alexis Laferrière <alexis.laf@xymus.net>
Reviewed-by: Jean Privat <jean@pryen.org>
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>