It means 'Cities of Bhutan' as u have rightly put it. It actually means 'Cities in Bhutan' in Marathi language.
वि. नरसीकर (चर्चा) ०७:३८, २४ ऑगस्ट २०१० (UTC)
Thank you. Then I will correct interwiki in this category. --Impro ०९:०२, २४ ऑगस्ट २०१० (UTC)