Add missing placeholder in Dutch translation.
Add missing placeholder in Dutch translation.

MilosKozak/AndroidAPS,MilosKozak/AndroidAPS,winni67/AndroidAPS,Heiner1/AndroidAPS,Heiner1/AndroidAPS,jotomo/AndroidAPS,jotomo/AndroidAPS,Heiner1/AndroidAPS,winni67/AndroidAPS,PoweRGbg/AndroidAPS,PoweRGbg/AndroidAPS,PoweRGbg/AndroidAPS,MilosKozak/AndroidAPS,jotomo/AndroidAPS,Heiner1/AndroidAPS