Mandy -> Mandy_(Billy_&_Mandy)

BUR #3917 has been approved by @NWF_Renim.

rename mandy -> mandy_(billy_&_mandy)

Somehow she doesn't have a qualifier despite being a common name, plus there are more characters named "Mandy" here.

EDIT: The bulk update request #3917 (forum #175865) has been approved by @NWF_Renim.

The bulk update request #3917 (forum #175865) has been approved by @NWF_Renim.

BUR #3918 has been approved by @Hillside_Moose.

rename mandy_(billy_&_mandy) -> mandy_(grim_adventures)

Standardizing qualifier to match with Billy and Grim.

EDIT: The bulk update request #3918 (forum #175867) has been approved by @Hillside_Moose.

The bulk update request #3918 (forum #175867) has been approved by @Hillside_Moose.

Oh, thank you. I just followed another character tagged the same way as I'm unfamiliar with it.