I know... And? Your point is what? Evolutions don't need to have the same type as their pre-evos... Plus one of Mega Audino's selling points is its new Fairy type.
"Each of these cards feature a number of charms down the left side of the artwork, and each charm is said to tell a story about the Pokémon in the illustration. The charms and what they denote are detailed in the table below."
Ribbon:
Charming Droplet:
Sorrow Heart:
Close friends Star:
Magnificent battler Clover:
Pure Book:
Story