Update qualifier on Ca and Magnesium (maeda_koutarou -> deino)

BUR #50936 has been approved by @evazion.

create alias ca_(maeda_koutarou) -> ca_(deino)
create alias magnesium_(maeda_koutarou) -> magnesium_(deino)

See deino_(deino3330) and calne_ca_(deino).

That copytag feels like it should get a wiki.

The bulk update request #50936 (forum #399480) has been approved by @evazion.