Facebook invitations not linking to my game on the google play store

I created a game using Unity 4.6 (it is available for download at the google play store https://play.google.com/store/apps/details?id=com.MiguelObando.FruitCollapse) and I am using the FacebookSDK 6.2.2 to try to share and invite people to play my game. I managed to send invitations but when people receive the invitation on their android phones, it won`t link to my game on the google play store. I don`t know if I have to introduce the link to my game in the google play store at Facebook`s developers website. I can`t find where to introduce the link, and I am not sure if it is needed. I have already introduced everything else: package name, class name and key hash as they appear in the Facebook settings in the Unity editor.